diff --git a/lib/mural/client/mural_content/areas.rb b/lib/mural/client/mural_content/areas.rb
index 27e93f5..84d5de1 100644
--- a/lib/mural/client/mural_content/areas.rb
+++ b/lib/mural/client/mural_content/areas.rb
@@ -11,7 +11,7 @@ def create_area(mural_id, create_area_params)
             create_area_params.encode
           )
 
-          Mural::Widget::Area.decode(json['value'])
+          Mural::Widget.decode(json['value'])
         end
 
         # https://developers.mural.co/public/reference/updatearea
@@ -21,7 +21,7 @@ def update_area(mural_id, area_id, update_area_params)
             update_area_params.encode
           )
 
-          Mural::Widget::Area.decode(json['value'])
+          Mural::Widget.decode(json['value'])
         end
       end
     end
diff --git a/lib/mural/client/mural_content/arrows.rb b/lib/mural/client/mural_content/arrows.rb
index afe17f0..a4fe41b 100644
--- a/lib/mural/client/mural_content/arrows.rb
+++ b/lib/mural/client/mural_content/arrows.rb
@@ -11,7 +11,7 @@ def create_arrow(mural_id, create_arrow_params)
             create_arrow_params.encode
           )
 
-          Mural::Widget::Arrow.decode(json['value'])
+          Mural::Widget.decode(json['value'])
         end
 
         # https://developers.mural.co/public/reference/updatearrow
@@ -21,7 +21,7 @@ def update_arrow(mural_id, arrow_id, update_arrow_params)
             update_arrow_params.encode
           )
 
-          Mural::Widget::Arrow.decode(json['value'])
+          Mural::Widget.decode(json['value'])
         end
       end
     end
diff --git a/lib/mural/client/mural_content/comments.rb b/lib/mural/client/mural_content/comments.rb
index ed5328f..84b4cb7 100644
--- a/lib/mural/client/mural_content/comments.rb
+++ b/lib/mural/client/mural_content/comments.rb
@@ -15,7 +15,7 @@ def create_comment(mural_id, create_comment_params)
             create_comment_params.encode
           )
 
-          Mural::Widget::Comment.decode(json['value'])
+          Mural::Widget.decode(json['value'])
         end
 
         # Update a comment widget on a mural.
@@ -29,7 +29,7 @@ def update_comment(mural_id, comment_id, update_comment_params)
             update_comment_params.encode
           )
 
-          Mural::Widget::Comment.decode(json['value'])
+          Mural::Widget.decode(json['value'])
         end
       end
     end
diff --git a/lib/mural/client/mural_content/files.rb b/lib/mural/client/mural_content/files.rb
index 6363b2e..68b20ea 100644
--- a/lib/mural/client/mural_content/files.rb
+++ b/lib/mural/client/mural_content/files.rb
@@ -11,7 +11,7 @@ def create_file(mural_id, params)
             params.encode
           )
 
-          Mural::Widget::File.decode(json['value'])
+          Mural::Widget.decode(json['value'])
         end
 
         # https://developers.mural.co/public/reference/getmuralfilewidgets
@@ -21,7 +21,7 @@ def list_files(mural_id, next_page: nil)
             { next: next_page }
           )
 
-          files = json['value'].map { |f| Mural::Widget::File.decode(f) }
+          files = json['value'].map { |f| Mural::Widget.decode(f) }
           [files, json['next']]
         end
 
@@ -32,7 +32,7 @@ def update_file(mural_id, widget_id:, update_file_params:)
             update_file_params.encode
           )
 
-          Mural::Widget::File.decode(json['value'])
+          Mural::Widget.decode(json['value'])
         end
       end
     end
diff --git a/lib/mural/client/mural_content/images.rb b/lib/mural/client/mural_content/images.rb
index 54368ca..cc10fa7 100644
--- a/lib/mural/client/mural_content/images.rb
+++ b/lib/mural/client/mural_content/images.rb
@@ -11,7 +11,7 @@ def create_image(mural_id, create_image_params)
             create_image_params.encode
           )
 
-          Mural::Widget::Image.decode(json['value'])
+          Mural::Widget.decode(json['value'])
         end
 
         # https://developers.mural.co/public/reference/createimage
@@ -21,7 +21,7 @@ def update_image(mural_id, image_id, update_image_params)
             update_image_params.encode
           )
 
-          Mural::Widget::Image.decode(json['value'])
+          Mural::Widget.decode(json['value'])
         end
       end
     end
diff --git a/lib/mural/client/mural_content/shapes.rb b/lib/mural/client/mural_content/shapes.rb
index 5c21d79..a69ac62 100644
--- a/lib/mural/client/mural_content/shapes.rb
+++ b/lib/mural/client/mural_content/shapes.rb
@@ -15,7 +15,7 @@ def create_shapes(mural_id, create_shape_params)
             [*create_shape_params].map(&:encode)
           )
           json['value'].map do |json_shape|
-            Mural::Widget::Shape.decode(json_shape)
+            Mural::Widget.decode(json_shape)
           end
         end
 
@@ -30,7 +30,7 @@ def update_shape(mural_id, shape_id, update_shape_params)
             update_shape_params.encode
           )
 
-          Mural::Widget::Shape.decode(json['value'])
+          Mural::Widget.decode(json['value'])
         end
       end
     end
diff --git a/lib/mural/client/mural_content/sticky_notes.rb b/lib/mural/client/mural_content/sticky_notes.rb
index 0e4de39..c737d20 100644
--- a/lib/mural/client/mural_content/sticky_notes.rb
+++ b/lib/mural/client/mural_content/sticky_notes.rb
@@ -15,7 +15,7 @@ def create_sticky_notes(mural_id, create_sticky_note_params)
             [*create_sticky_note_params].map(&:encode)
           )
 
-          json['value'].map { |s| Mural::Widget::StickyNote.decode(s) }
+          json['value'].map { |s| Mural::Widget.decode(s) }
         end
 
         # Update a sticky note widget on a mural.
@@ -32,7 +32,7 @@ def update_sticky_note(
             update_sticky_note_params.encode
           )
 
-          Mural::Widget::StickyNote.decode(json['value'])
+          Mural::Widget.decode(json['value'])
         end
       end
     end
diff --git a/lib/mural/client/mural_content/text_boxes.rb b/lib/mural/client/mural_content/text_boxes.rb
index c6c12e5..04cec57 100644
--- a/lib/mural/client/mural_content/text_boxes.rb
+++ b/lib/mural/client/mural_content/text_boxes.rb
@@ -15,7 +15,7 @@ def create_text_boxes(mural_id, create_text_box_params)
             [*create_text_box_params].map(&:encode)
           )
 
-          json['value'].map { |text_box| Mural::Widget::Text.decode(text_box) }
+          json['value'].map { |text_box| Mural::Widget.decode(text_box) }
         end
 
         # Update a textbox on a mural
@@ -29,7 +29,7 @@ def update_text_box(mural_id, text_box_id, update_text_box_params)
             update_text_box_params.encode
           )
 
-          Mural::Widget::Text.decode(json['value'])
+          Mural::Widget.decode(json['value'])
         end
       end
     end
diff --git a/lib/mural/client/mural_content/titles.rb b/lib/mural/client/mural_content/titles.rb
index 3af8ca1..19ec479 100644
--- a/lib/mural/client/mural_content/titles.rb
+++ b/lib/mural/client/mural_content/titles.rb
@@ -15,7 +15,7 @@ def create_titles(mural_id, create_title_params)
             [*create_title_params].map(&:encode)
           )
 
-          json['value'].map { |title| Mural::Widget::Text.decode(title) }
+          json['value'].map { |title| Mural::Widget.decode(title) }
         end
 
         # Update a title on a mural
@@ -29,7 +29,7 @@ def update_title(mural_id, title_id, update_title_params)
             update_title_params.encode
           )
 
-          Mural::Widget::Text.decode(json['value'])
+          Mural::Widget.decode(json['value'])
         end
       end
     end
diff --git a/lib/mural/widget/create_area_params.rb b/lib/mural/widget/create_area_params.rb
index 0c8d260..7c58ac9 100644
--- a/lib/mural/widget/create_area_params.rb
+++ b/lib/mural/widget/create_area_params.rb
@@ -5,23 +5,23 @@ class Widget
     class CreateAreaParams
       include Mural::Codec
 
+      # https://developers.mural.co/public/reference/createarea
       define_attributes(
-        **Mural::Widget::Area.attrs.reject do |attr|
+        **Mural::Widget::Area.attrs.filter do |attr|
           %i[
-            content_edited_by
-            content_edited_on
-            created_by
-            created_on
-            hide_editor
-            hide_owner
-            id
-            invisible
-            locked
-            locked_by_facilitator
-            rotation
-            type
-            updated_by
-            updated_on
+            height
+            hidden
+            instruction
+            layout
+            parent_id
+            presentation_index
+            show_title
+            stacking_order
+            style
+            title
+            width
+            x
+            y
           ].include? attr
         end
       )
diff --git a/lib/mural/widget/create_arrow_params.rb b/lib/mural/widget/create_arrow_params.rb
index 6c32f96..ae2bbcc 100644
--- a/lib/mural/widget/create_arrow_params.rb
+++ b/lib/mural/widget/create_arrow_params.rb
@@ -7,26 +7,34 @@ class CreateArrowParams
 
       # https://developers.mural.co/public/reference/createarrow
       define_attributes(
-        **Mural::Widget::Arrow.attrs.reject do |attr|
+        **Mural::Widget::Arrow.attrs.filter do |attr|
           %i[
-            content_edited_by
-            content_edited_on
-            created_by
-            created_on
-            hidden
-            hide_editor
-            hide_owner
-            id
-            invisible
-            locked
-            locked_by_facilitator
-            type
-            updated_by
-            updated_on
+            arrow_type
+            end_ref_id
+            height
+            instruction
+            label
+            parent_id
+            points
+            presentation_index
+            rotation
+            stackable
+            stacking_order
+            start_ref_id
+            style
+            tip
+            title
+            width
+            x
+            y
           ].include? attr
         end
       )
 
+      Style = Mural::Widget::Arrow::Style
+      Label = Mural::Widget::Arrow::Label
+      Point = Mural::Widget::Arrow::Point
+
       def encode
         super.tap do |json|
           json['points']&.map!(&:encode)
@@ -34,10 +42,6 @@ def encode
           json['style'] = json['style']&.encode
         end
       end
-
-      Style = Mural::Widget::Arrow::Style
-      Label = Mural::Widget::Arrow::Label
-      Point = Mural::Widget::Arrow::Point
     end
   end
 end
diff --git a/lib/mural/widget/create_comment_params.rb b/lib/mural/widget/create_comment_params.rb
index 3cbddc7..12beb9c 100644
--- a/lib/mural/widget/create_comment_params.rb
+++ b/lib/mural/widget/create_comment_params.rb
@@ -5,17 +5,19 @@ class Widget
     class CreateCommentParams
       include Mural::Codec
 
+      # https://developers.mural.co/public/reference/createcomment
       define_attributes(
         **Mural::Widget::Comment.attrs.filter do |attr|
           %i[
-            reference_widget_id
             message
+            reference_widget_id
             stacking_order
             x
             y
           ].include? attr
         end,
 
+        # If true, the comment is marked as resolved.
         resolved: 'resolved'
       )
     end
diff --git a/lib/mural/widget/create_file_params.rb b/lib/mural/widget/create_file_params.rb
index 5c33c0c..c462fda 100644
--- a/lib/mural/widget/create_file_params.rb
+++ b/lib/mural/widget/create_file_params.rb
@@ -7,49 +7,24 @@ class CreateFileParams
 
       # https://developers.mural.co/public/reference/createfile
       define_attributes(
-        # The height of the widget in px. This value will be overwritten if the
-        # file has a preview from which the final value will be extracted.
-        height: 'height',
-
-        # If true, the widget is hidden from non-facilitators. Applies only when
-        # the widget is in the outline.
-        hidden: 'hidden',
-
-        # The instructions for a section of the outline. This text can only be
-        # added and modified by a facilitator.
-        instruction: 'instruction',
+        **Mural::Widget::File.attrs.filter do |attr|
+          %i[
+            height
+            hidden
+            instruction
+            parent_id
+            presentation_index
+            rotation
+            stacking_order
+            title
+            width
+            x
+            y
+          ].include? attr
+        end,
 
         # The name of the file.
-        name: 'name',
-
-        # The ID of the area widget that contains the widget.
-        parent_id: 'parentId',
-
-        # The list order of the widget in the outline.
-        presentation_index: 'presentationIndex',
-
-        # The angle of widget rotation in degrees.
-        rotation: 'rotation',
-
-        # The z-index stacking order of the widget.
-        stacking_order: 'stackingOrder',
-
-        # The title in the file widget and in the outline.
-        title: 'title',
-
-        # The width of the widget in px. This value will be overwritten if the
-        # file has a preview from which the final value will be extracted.
-        width: 'width',
-
-        # The horizontal position of the widget in px. This is the distance from
-        # the left of the parent widget, such as an area. If the widget has no
-        # parent widget, this is the distance from the left of the mural.
-        x: 'x',
-
-        # The vertical position of the widget in px. This is the distance from
-        # the top of the parent widget, such as an area. If the widget has no
-        # parent widget, this is the distance from the top of the mural.
-        y: 'y'
+        name: 'name'
       )
     end
   end
diff --git a/lib/mural/widget/create_image_params.rb b/lib/mural/widget/create_image_params.rb
index c0a73cc..4b31136 100644
--- a/lib/mural/widget/create_image_params.rb
+++ b/lib/mural/widget/create_image_params.rb
@@ -5,30 +5,24 @@ class Widget
     class CreateImageParams
       include Mural::Codec
 
+      # https://developers.mural.co/public/reference/createimage
       define_attributes(
-        **Mural::Widget::Image.attrs.reject do |attr|
+        **Mural::Widget::Image.attrs.filter do |attr|
           %i[
-            aspect_ratio
-            content_edited_by
-            content_edited_on
-            created_by
-            created_on
-            expires_in_minutes
-            hide_editor
-            hide_owner
-            id
-            invisible
-            link
-            locked
-            locked_by_facilitator
-            mask
-            natural_height
-            natural_width
-            thumbnail_url
-            type
-            updated_by
-            updated_on
-            url
+            border
+            caption
+            description
+            height
+            hidden
+            instruction
+            parent_id
+            presentation_index
+            rotation
+            show_caption
+            stacking_order
+            width
+            x
+            y
           ].include? attr
         end,
 
diff --git a/lib/mural/widget/create_shape_params.rb b/lib/mural/widget/create_shape_params.rb
index f8b672e..859f34a 100644
--- a/lib/mural/widget/create_shape_params.rb
+++ b/lib/mural/widget/create_shape_params.rb
@@ -5,6 +5,7 @@ class Widget
     class CreateShapeParams
       include Mural::Codec
 
+      # https://developers.mural.co/public/reference/createshapewidget
       define_attributes(
         **Mural::Widget::Shape.attrs.filter do |attr|
           %i[
diff --git a/lib/mural/widget/create_sticky_note_params.rb b/lib/mural/widget/create_sticky_note_params.rb
index 5a5d189..4e3e281 100644
--- a/lib/mural/widget/create_sticky_note_params.rb
+++ b/lib/mural/widget/create_sticky_note_params.rb
@@ -5,6 +5,7 @@ class Widget
     class CreateStickyNoteParams
       include Mural::Codec
 
+      # https://developers.mural.co/public/reference/createstickynote
       define_attributes(
         **Mural::Widget::StickyNote.attrs.filter do |attr|
           %i[
@@ -30,14 +31,13 @@ class CreateStickyNoteParams
         end
       )
 
+      Style = Mural::Widget::StickyNote::Style
+
       def encode
         super.tap do |json|
           json['style'] = json['style']&.encode
         end.compact
       end
-
-      # Exact same values, no restrictions
-      Style = Mural::Widget::StickyNote::Style
     end
   end
 end
diff --git a/lib/mural/widget/create_table_cell_params.rb b/lib/mural/widget/create_table_cell_params.rb
index 02a80bb..9581147 100644
--- a/lib/mural/widget/create_table_cell_params.rb
+++ b/lib/mural/widget/create_table_cell_params.rb
@@ -5,6 +5,7 @@ class Widget
     class CreateTableCellParams
       include Mural::Codec
 
+      # https://developers.mural.co/public/reference/createtable
       define_attributes(
         **Mural::Widget::TableCell.attrs.filter do |attr|
           %i[
@@ -23,15 +24,15 @@ class CreateTableCellParams
         end
       )
 
+      Style = Mural::Widget::TableCell::Style
+      TextContent = Mural::Widget::TableCell::TextContent
+
       def encode
         super.tap do |json|
           json['style'] = json['style']&.encode
           json['textContent'] = json['textContent']&.encode
         end.compact
       end
-
-      Style = Mural::Widget::TableCell::Style
-      TextContent = Mural::Widget::TableCell::TextContent
     end
   end
 end
diff --git a/lib/mural/widget/create_table_params.rb b/lib/mural/widget/create_table_params.rb
index 37af35b..3a81c33 100644
--- a/lib/mural/widget/create_table_params.rb
+++ b/lib/mural/widget/create_table_params.rb
@@ -5,6 +5,7 @@ class Widget
     class CreateTableParams
       include Mural::Codec
 
+      # https://developers.mural.co/public/reference/createtable
       define_attributes(
         **Mural::Widget::Table.attrs.filter do |attr|
           %i[
diff --git a/lib/mural/widget/create_text_box_params.rb b/lib/mural/widget/create_text_box_params.rb
index c11c82c..a4e4617 100644
--- a/lib/mural/widget/create_text_box_params.rb
+++ b/lib/mural/widget/create_text_box_params.rb
@@ -5,6 +5,7 @@ class Widget
     class CreateTextBoxParams
       include Mural::Codec
 
+      # https://developers.mural.co/public/reference/createtextbox
       define_attributes(
         **Mural::Widget::Text.attrs.filter do |attr|
           %i[
diff --git a/lib/mural/widget/create_title_params.rb b/lib/mural/widget/create_title_params.rb
index 413b565..0d24050 100644
--- a/lib/mural/widget/create_title_params.rb
+++ b/lib/mural/widget/create_title_params.rb
@@ -5,6 +5,7 @@ class Widget
     class CreateTitleParams
       include Mural::Codec
 
+      # https://developers.mural.co/public/reference/createtitle
       define_attributes(
         **Mural::Widget::Text.attrs.filter do |attr|
           %i[
diff --git a/lib/mural/widget/update_area_params.rb b/lib/mural/widget/update_area_params.rb
index f2db340..d3153a0 100644
--- a/lib/mural/widget/update_area_params.rb
+++ b/lib/mural/widget/update_area_params.rb
@@ -5,8 +5,11 @@ class Widget
     class UpdateAreaParams
       include Mural::Codec
 
+      # https://developers.mural.co/public/reference/updatearea
       define_attributes(
-        **Mural::Widget::CreateAreaParams.attrs
+        **Mural::Widget::CreateAreaParams.attrs.reject do |attr|
+          %i[stacking_order].include? attr
+        end
       )
 
       Style = Mural::Widget::Area::Style
diff --git a/lib/mural/widget/update_arrow_params.rb b/lib/mural/widget/update_arrow_params.rb
index 8abd0ee..bdb2e6b 100644
--- a/lib/mural/widget/update_arrow_params.rb
+++ b/lib/mural/widget/update_arrow_params.rb
@@ -5,12 +5,17 @@ class Widget
     class UpdateArrowParams
       include Mural::Codec
 
+      # https://developers.mural.co/public/reference/updatearrow
       define_attributes(
         **Mural::Widget::CreateArrowParams.attrs.reject do |attr|
           %i[stacking_order].include? attr
         end
       )
 
+      Style = Mural::Widget::Arrow::Style
+      Label = Mural::Widget::Arrow::Label
+      Point = Mural::Widget::Arrow::Point
+
       def encode
         super.tap do |json|
           json['points']&.map!(&:encode)
@@ -18,10 +23,6 @@ def encode
           json['style'] = json['style']&.encode
         end
       end
-
-      Style = Mural::Widget::Arrow::Style
-      Label = Mural::Widget::Arrow::Label
-      Point = Mural::Widget::Arrow::Point
     end
   end
 end
diff --git a/lib/mural/widget/update_comment_params.rb b/lib/mural/widget/update_comment_params.rb
index a2d6c9d..23a86bf 100644
--- a/lib/mural/widget/update_comment_params.rb
+++ b/lib/mural/widget/update_comment_params.rb
@@ -5,6 +5,7 @@ class Widget
     class UpdateCommentParams
       include Mural::Codec
 
+      # https://developers.mural.co/public/reference/updatecomment
       define_attributes(
         **Mural::Widget::CreateCommentParams.attrs.reject do |attr|
           %i[stacking_order].include? attr
diff --git a/lib/mural/widget/update_file_params.rb b/lib/mural/widget/update_file_params.rb
index 4f5c0fa..ea759e0 100644
--- a/lib/mural/widget/update_file_params.rb
+++ b/lib/mural/widget/update_file_params.rb
@@ -7,43 +7,9 @@ class UpdateFileParams
 
       # https://developers.mural.co/public/reference/updatefile
       define_attributes(
-        # The height of the widget in px. This value will be overwritten if the
-        # file has a preview from which the final value will be extracted.
-        height: 'height',
-
-        # If true, the widget is hidden from non-facilitators. Applies only when
-        # the widget is in the outline.
-        hidden: 'hidden',
-
-        # The instructions for a section of the outline. This text can only be
-        # added and modified by a facilitator.
-        instruction: 'instruction',
-
-        # The ID of the area widget that contains the widget.
-        parent_id: 'parentId',
-
-        # The list order of the widget in the outline.
-        presentation_index: 'presentationIndex',
-
-        # The angle of widget rotation in degrees.
-        rotation: 'rotation',
-
-        # The title in the file widget and in the outline.
-        title: 'title',
-
-        # The width of the widget in px. This value will be overwritten if the
-        # file has a preview from which the final value will be extracted.
-        width: 'width',
-
-        # The horizontal position of the widget in px. This is the distance from
-        # the left of the parent widget, such as an area. If the widget has no
-        # parent widget, this is the distance from the left of the mural.
-        x: 'x',
-
-        # The vertical position of the widget in px. This is the distance from
-        # the top of the parent widget, such as an area. If the widget has no
-        # parent widget, this is the distance from the top of the mural.
-        y: 'y'
+        **Mural::Widget::CreateFileParams.attrs.reject do |attr|
+          %i[name stacking_order].include? attr
+        end
       )
     end
   end
diff --git a/lib/mural/widget/update_image_params.rb b/lib/mural/widget/update_image_params.rb
index bb510ac..57394d6 100644
--- a/lib/mural/widget/update_image_params.rb
+++ b/lib/mural/widget/update_image_params.rb
@@ -7,7 +7,7 @@ class UpdateImageParams
 
       define_attributes(
         **Mural::Widget::CreateImageParams.attrs.reject do |attr|
-          %i[name].include? attr
+          %i[name stacking_order].include? attr
         end
       )
     end
diff --git a/lib/mural/widget/update_shape_params.rb b/lib/mural/widget/update_shape_params.rb
index 2262804..3e6dcc4 100644
--- a/lib/mural/widget/update_shape_params.rb
+++ b/lib/mural/widget/update_shape_params.rb
@@ -5,6 +5,7 @@ class Widget
     class UpdateShapeParams
       include Mural::Codec
 
+      # https://developers.mural.co/public/reference/updateshapewidget
       define_attributes(
         **Mural::Widget::CreateShapeParams.attrs.reject do |attr|
           %i[shape stacking_order].include? attr
diff --git a/lib/mural/widget/update_sticky_note_params.rb b/lib/mural/widget/update_sticky_note_params.rb
index 2cdb5fe..b58e783 100644
--- a/lib/mural/widget/update_sticky_note_params.rb
+++ b/lib/mural/widget/update_sticky_note_params.rb
@@ -5,22 +5,20 @@ class Widget
     class UpdateStickyNoteParams
       include Mural::Codec
 
+      # https://developers.mural.co/public/reference/updatestickynote
       define_attributes(
         **Mural::Widget::CreateStickyNoteParams.attrs.reject do |attr|
-          %i[
-            stacking_order
-            shape
-          ].include? attr
+          %i[stacking_order shape].include? attr
         end
       )
 
+      Style = Mural::Widget::StickyNote::Style
+
       def encode
         super.tap do |json|
           json['style'] = json['style']&.encode
         end
       end
-
-      Style = Mural::Widget::StickyNote::Style
     end
   end
 end
diff --git a/lib/mural/widget/update_text_box_params.rb b/lib/mural/widget/update_text_box_params.rb
index 0010c00..33d5602 100644
--- a/lib/mural/widget/update_text_box_params.rb
+++ b/lib/mural/widget/update_text_box_params.rb
@@ -5,6 +5,7 @@ class Widget
     class UpdateTextBoxParams
       include Mural::Codec
 
+      # https://developers.mural.co/public/reference/updatetextbox
       define_attributes(
         **Mural::Widget::CreateTextBoxParams.attrs.reject do |attr|
           %i[stacking_order].include? attr
diff --git a/lib/mural/widget/update_title_params.rb b/lib/mural/widget/update_title_params.rb
index f2eb3b7..8de4f98 100644
--- a/lib/mural/widget/update_title_params.rb
+++ b/lib/mural/widget/update_title_params.rb
@@ -5,6 +5,7 @@ class Widget
     class UpdateTitleParams
       include Mural::Codec
 
+      # https://developers.mural.co/public/reference/updatetitle
       define_attributes(
         **Mural::Widget::CreateTitleParams.attrs.reject do |attr|
           %i[stacking_order].include? attr
diff --git a/test/mural/client/mural_content/test_areas.rb b/test/mural/client/mural_content/test_areas.rb
index 1835c6d..77f6f46 100644
--- a/test/mural/client/mural_content/test_areas.rb
+++ b/test/mural/client/mural_content/test_areas.rb
@@ -5,6 +5,45 @@ def setup
     @client = Mural::Client.new
   end
 
+  def test_create_area_params
+    want = %i[
+      height
+      hidden
+      instruction
+      layout
+      parent_id
+      presentation_index
+      show_title
+      stacking_order
+      style
+      title
+      width
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::CreateAreaParams.attrs.keys.sort
+  end
+
+  def test_update_area_params
+    want = %i[
+      height
+      hidden
+      instruction
+      layout
+      parent_id
+      presentation_index
+      show_title
+      style
+      title
+      width
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::UpdateAreaParams.attrs.keys.sort
+  end
+
   def test_create_area
     mural_id = 'mural-1'
 
@@ -13,7 +52,38 @@ def test_create_area
       "https://app.mural.co/api/public/v1/murals/#{mural_id}/widgets/area"
     ).with(body: { title: 'Nothing to see here' })
       .to_return_json(
-        body: { value: { id: 'area-51' } },
+        body: { value: { id: 'area-51', type: 'area' } },
+        status: 201
+      )
+
+    create_area_params = Mural::Widget::CreateAreaParams.new.tap do |params|
+      params.title = 'Nothing to see here'
+    end
+
+    area = @client.mural_content.create_area(mural_id, create_area_params)
+
+    assert_instance_of Mural::Widget::Area, area
+  end
+
+  def test_should_decode_content_edited_by
+    mural_id = 'mural-1'
+
+    stub_request(
+      :post,
+      "https://app.mural.co/api/public/v1/murals/#{mural_id}/widgets/area"
+    ).with(body: { title: 'Nothing to see here' })
+      .to_return_json(
+        body: {
+          value: {
+            id: 'area-51',
+            contentEditedBy: {
+              id: 'user-1',
+              firstName: 'John',
+              lastName: 'Doe'
+            },
+            type: 'area'
+          }
+        },
         status: 201
       )
 
@@ -24,6 +94,7 @@ def test_create_area
     area = @client.mural_content.create_area(mural_id, create_area_params)
 
     assert_instance_of Mural::Widget::Area, area
+    assert_equal 'John', area.content_edited_by.first_name
   end
 
   def test_create_area_with_style
@@ -36,7 +107,7 @@ def test_create_area_with_style
       body: { title: 'Todo', style: { backgroundColor: '#FFFFFF33' } }
     )
       .to_return_json(
-        body: { value: { id: 'area-1' } },
+        body: { value: { id: 'area-1', type: 'area' } },
         status: 201
       )
 
@@ -61,7 +132,7 @@ def test_update_area
       "https://app.mural.co/api/public/v1/murals/#{mural_id}/widgets" \
       "/area/#{area_id}"
     ).with(body: { title: 'updated title' })
-      .to_return_json(body: { value: { id: 'area-1' } })
+      .to_return_json(body: { value: { id: 'area-1', type: 'area' } })
 
     update_area_params = Mural::Widget::UpdateAreaParams.new.tap do |params|
       params.title = 'updated title'
@@ -83,7 +154,7 @@ def test_update_area_with_style
       "https://app.mural.co/api/public/v1/murals/#{mural_id}/widgets" \
       "/area/#{area_id}"
     ).with(body: { style: { backgroundColor: '#FAFAFAFF' } })
-      .to_return_json(body: { value: { id: 'area-1' } })
+      .to_return_json(body: { value: { id: 'area-1', type: 'area' } })
 
     update_area_params = Mural::Widget::UpdateAreaParams.new.tap do |params|
       params.style = Mural::Widget::UpdateAreaParams::Style.new.tap do |style|
diff --git a/test/mural/client/mural_content/test_arrows.rb b/test/mural/client/mural_content/test_arrows.rb
index e823f70..e0c2a7e 100644
--- a/test/mural/client/mural_content/test_arrows.rb
+++ b/test/mural/client/mural_content/test_arrows.rb
@@ -5,6 +5,55 @@ def setup
     @client = Mural::Client.new
   end
 
+  def test_create_arrow_params
+    want = %i[
+      arrow_type
+      end_ref_id
+      height
+      instruction
+      label
+      parent_id
+      points
+      presentation_index
+      rotation
+      stackable
+      stacking_order
+      start_ref_id
+      style
+      tip
+      title
+      width
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::CreateArrowParams.attrs.keys.sort
+  end
+
+  def test_update_arrow_params
+    want = %i[
+      arrow_type
+      end_ref_id
+      height
+      instruction
+      label
+      parent_id
+      points
+      presentation_index
+      rotation
+      stackable
+      start_ref_id
+      style
+      tip
+      title
+      width
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::UpdateArrowParams.attrs.keys.sort
+  end
+
   def test_create_minimal_arrow
     mural_id = 'mural-1'
 
@@ -23,7 +72,59 @@ def test_create_minimal_arrow
         ]
       }
     ).to_return_json(
-      body: { value: { id: 'arrow-1' } },
+      body: { value: { id: 'arrow-1', type: 'arrow' } },
+      status: 201
+    )
+
+    create_arrow_params = Mural::Widget::CreateArrowParams.new.tap do |params|
+      params.height = 1
+      params.width = 216
+      params.x = 0
+      params.y = 0
+
+      params.points = [
+        Mural::Widget::Arrow::Point.new.tap do |p|
+          p.x = 216
+          p.y = 0
+        end,
+        Mural::Widget::Arrow::Point.new.tap do |p|
+          p.x = 0
+          p.y = 0
+        end
+      ]
+    end
+
+    arrow = @client.mural_content.create_arrow(mural_id, create_arrow_params)
+
+    assert_instance_of Mural::Widget::Arrow, arrow
+    assert_equal 'arrow-1', arrow.id
+  end
+
+  def test_should_decode_content_edited_by
+    mural_id = 'mural-1'
+
+    stub_request(
+      :post,
+      "https://app.mural.co/api/public/v1/murals/#{mural_id}/widgets/arrow"
+    ).with(
+      body: {
+        height: 1,
+        width: 216,
+        x: 0,
+        y: 0,
+        points: [
+          { x: 216, y: 0 },
+          { x: 0, y: 0 }
+        ]
+      }
+    ).to_return_json(
+      body: {
+        value: {
+          id: 'arrow-1',
+          contentEditedBy: { id: 'user-1', firstName: 'John' },
+          type: 'arrow'
+        }
+      },
       status: 201
     )
 
@@ -49,6 +150,7 @@ def test_create_minimal_arrow
 
     assert_instance_of Mural::Widget::Arrow, arrow
     assert_equal 'arrow-1', arrow.id
+    assert_equal 'John', arrow.content_edited_by.first_name
   end
 
   def test_create_arrow_without_points
@@ -111,7 +213,7 @@ def test_create_arrow_with_style_and_formatted_label
         label: { format: { fontFamily: 'proxima-nova' } }
       }
     ).to_return_json(
-      body: { value: { id: 'arrow-1' } },
+      body: { value: { id: 'arrow-1', type: 'arrow' } },
       status: 201
     )
 
@@ -173,7 +275,7 @@ def test_create_arrow_with_unformatted_labels
         }
       }
     ).to_return_json(
-      body: { value: { id: 'arrow-1' } },
+      body: { value: { id: 'arrow-1', type: 'arrow' } },
       status: 201
     )
 
@@ -228,7 +330,7 @@ def test_update_arrow
           { x: 0, y: 0 }
         ]
       }
-    ).to_return_json(body: { value: { id: 'arrow-1' } })
+    ).to_return_json(body: { value: { id: 'arrow-1', type: 'arrow' } })
 
     update_arrow_params = Mural::Widget::UpdateArrowParams.new.tap do |params|
       params.points = [
@@ -266,7 +368,7 @@ def test_update_arrow_with_style_and_formatted_label
         style: { strokeColor: '#FAFAFAFF' },
         label: { format: { fontFamily: 'proxima-nova' } }
       }
-    ).to_return_json(body: { value: { id: 'arrow-1' } })
+    ).to_return_json(body: { value: { id: 'arrow-1', type: 'arrow' } })
 
     update_arrow_params = Mural::Widget::UpdateArrowParams.new.tap do |params|
       params.style = Mural::Widget::UpdateArrowParams::Style.new.tap do |style|
diff --git a/test/mural/client/mural_content/test_comments.rb b/test/mural/client/mural_content/test_comments.rb
index f973717..674d326 100644
--- a/test/mural/client/mural_content/test_comments.rb
+++ b/test/mural/client/mural_content/test_comments.rb
@@ -5,6 +5,32 @@ def setup
     @client = Mural::Client.new
   end
 
+  def test_create_comment_params
+    want = %i[
+      message
+      reference_widget_id
+      resolved
+      stacking_order
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::CreateCommentParams.attrs.keys.sort
+  end
+
+  def test_update_comment_params
+    want = %i[
+      message
+      reference_widget_id
+      replies
+      resolved
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::UpdateCommentParams.attrs.keys.sort
+  end
+
   def test_create_comment
     mural_id = 'mural-1'
 
@@ -14,7 +40,13 @@ def test_create_comment
     )
       .with(body: { message: 'This is a test', x: 0, y: 0 })
       .to_return_json(
-        body: { value: { id: 'comment-1', message: 'This is a test' } },
+        body: {
+          value: {
+            id: 'comment-1',
+            message: 'This is a test',
+            type: 'comment'
+          }
+        },
         status: 201
       )
 
@@ -33,6 +65,40 @@ def test_create_comment
     assert_equal 'This is a test', comment.message
   end
 
+  def test_should_decode_content_edited_by
+    mural_id = 'mural-1'
+
+    stub_request(
+      :post,
+      "https://app.mural.co/api/public/v1/murals/#{mural_id}/widgets/comment"
+    )
+      .with(body: { message: 'This is a test', x: 0, y: 0 })
+      .to_return_json(
+        body: {
+          value: {
+            id: 'comment-1',
+            message: 'This is a test',
+            contentEditedBy: { id: 'user-1', firstName: 'John' },
+            type: 'comment'
+          }
+        },
+        status: 201
+      )
+
+    create_comment_params = Mural::Widget::CreateCommentParams.new.tap do |c|
+      c.message = 'This is a test'
+      c.x = 0
+      c.y = 0
+    end
+
+    comment = @client
+              .mural_content
+              .create_comment(mural_id, create_comment_params)
+
+    assert_instance_of Mural::Widget::Comment, comment
+    assert_equal 'John', comment.content_edited_by.first_name
+  end
+
   def test_update_comment
     mural_id = 'mural-1'
     comment_id = 'comment-1'
@@ -50,7 +116,8 @@ def test_update_comment
             message: 'This is a test',
             replies: [
               { created: 1, message: 'And it succeeded', user: 'user-1' }
-            ]
+            ],
+            type: 'comment'
           }
         },
         status: 201
diff --git a/test/mural/client/mural_content/test_files.rb b/test/mural/client/mural_content/test_files.rb
index 995ca7f..ee5a4b4 100644
--- a/test/mural/client/mural_content/test_files.rb
+++ b/test/mural/client/mural_content/test_files.rb
@@ -7,6 +7,42 @@ def setup
     @client = Mural::Client.new
   end
 
+  def test_create_file_params
+    want = %i[
+      height
+      hidden
+      instruction
+      name
+      parent_id
+      presentation_index
+      rotation
+      stacking_order
+      title
+      width
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::CreateFileParams.attrs.keys.sort
+  end
+
+  def test_update_file_params
+    want = %i[
+      height
+      hidden
+      instruction
+      parent_id
+      presentation_index
+      rotation
+      title
+      width
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::UpdateFileParams.attrs.keys.sort
+  end
+
   def test_create_file
     mural_id = 'mural-1'
 
@@ -16,7 +52,7 @@ def test_create_file
     )
       .with(body: { name: 'my file', x: 5, y: 10 })
       .to_return_json(
-        body: { value: { id: 'widget-1' } },
+        body: { value: { id: 'widget-1', type: 'file' } },
         status: 201
       )
 
@@ -32,6 +68,37 @@ def test_create_file
     assert_equal 'widget-1', file.id
   end
 
+  def test_should_decode_content_edited_by
+    mural_id = 'mural-1'
+
+    stub_request(
+      :post,
+      "https://app.mural.co/api/public/v1/murals/#{mural_id}/widgets/file"
+    )
+      .with(body: { name: 'my file', x: 5, y: 10 })
+      .to_return_json(
+        body: {
+          value: {
+            id: 'widget-1',
+            contentEditedBy: { id: 'user-1', firstName: 'John' },
+            type: 'file'
+          }
+        },
+        status: 201
+      )
+
+    params = Mural::Widget::CreateFileParams.new.tap do |params|
+      params.name = 'my file'
+      params.x = 5
+      params.y = 10
+    end
+
+    file = @client.mural_content.create_file(mural_id, params)
+
+    assert_instance_of Mural::Widget::File, file
+    assert_equal 'John', file.content_edited_by.first_name
+  end
+
   def test_list_files
     mural_id = 'mural-2'
 
diff --git a/test/mural/client/mural_content/test_images.rb b/test/mural/client/mural_content/test_images.rb
index e9f52c1..d4aad68 100644
--- a/test/mural/client/mural_content/test_images.rb
+++ b/test/mural/client/mural_content/test_images.rb
@@ -7,6 +7,50 @@ def setup
     @client = Mural::Client.new
   end
 
+  def test_create_image_params
+    want = %i[
+      border
+      caption
+      description
+      height
+      hidden
+      hyperlink
+      instruction
+      name
+      parent_id
+      presentation_index
+      rotation
+      show_caption
+      stacking_order
+      width
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::CreateImageParams.attrs.keys.sort
+  end
+
+  def test_update_image_params
+    want = %i[
+      border
+      caption
+      description
+      height
+      hidden
+      hyperlink
+      instruction
+      parent_id
+      presentation_index
+      rotation
+      show_caption
+      width
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::UpdateImageParams.attrs.keys.sort
+  end
+
   def test_create_image
     mural_id = 'mural-1'
 
@@ -19,7 +63,8 @@ def test_create_image
         body: {
           value: {
             id: 'image-1',
-            thumbnailUrl: 'https://example.com/thumbnail.jpg'
+            thumbnailUrl: 'https://example.com/thumbnail.jpg',
+            type: 'image'
           }
         },
         status: 201
@@ -36,6 +81,39 @@ def test_create_image
     assert_equal 'https://example.com/thumbnail.jpg', image.thumbnail_url
   end
 
+  def test_should_decode_content_edited_by
+    mural_id = 'mural-1'
+
+    stub_request(
+      :post,
+      "https://app.mural.co/api/public/v1/murals/#{mural_id}/widgets/image"
+    )
+      .with(body: { name: 'my image' })
+      .to_return_json(
+        body: {
+          value: {
+            id: 'image-1',
+            thumbnailUrl: 'https://example.com/thumbnail.jpg',
+            contentEditedBy: {
+              id: 'user-1',
+              firstName: 'John'
+            },
+            type: 'image'
+          }
+        },
+        status: 201
+      )
+
+    params = Mural::Widget::CreateImageParams.new.tap do |params|
+      params.name = 'my image'
+    end
+
+    image = @client.mural_content.create_image(mural_id, params)
+
+    assert_instance_of Mural::Widget::Image, image
+    assert_equal 'John', image.content_edited_by.first_name
+  end
+
   def test_update_image
     mural_id = 'mural-1'
     image_id = 'image-1'
@@ -47,7 +125,7 @@ def test_update_image
     )
       .with(body: { showCaption: false })
       .to_return_json(
-        body: { value: { id: 'image-1' } },
+        body: { value: { id: 'image-1', type: 'image' } },
         status: 201
       )
 
diff --git a/test/mural/client/mural_content/test_shapes.rb b/test/mural/client/mural_content/test_shapes.rb
index 0458e11..a8573f9 100644
--- a/test/mural/client/mural_content/test_shapes.rb
+++ b/test/mural/client/mural_content/test_shapes.rb
@@ -5,6 +5,48 @@ def setup
     @client = Mural::Client.new
   end
 
+  def test_create_shape_params
+    want = %i[
+      height
+      hidden
+      html_text
+      instruction
+      parent_id
+      presentation_index
+      rotation
+      shape
+      stacking_order
+      style
+      text
+      title
+      width
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::CreateShapeParams.attrs.keys.sort
+  end
+
+  def test_update_shape_params
+    want = %i[
+      height
+      hidden
+      html_text
+      instruction
+      parent_id
+      presentation_index
+      rotation
+      style
+      text
+      title
+      width
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::UpdateShapeParams.attrs.keys.sort
+  end
+
   def test_create_shapes
     mural_id = 'mural-1'
 
@@ -26,11 +68,12 @@ def test_create_shapes
       .to_return_json(
         body: {
           value: [
-            { id: 'shape-1', shape: 'rectangle' },
+            { id: 'shape-1', shape: 'rectangle', type: 'shape' },
             {
               id: 'shape-2',
               shape: 'ellipse',
-              style: { backgroundColor: '#FAFAFAFF' }
+              style: { backgroundColor: '#FAFAFAFF' },
+              type: 'shape'
             }
           ]
         },
@@ -73,6 +116,51 @@ def test_create_shapes
     assert_equal '#FAFAFAFF', ellipse.style.background_color
   end
 
+  def test_should_decode_content_edited_by
+    mural_id = 'mural-1'
+
+    stub_request(
+      :post,
+      "https://app.mural.co/api/public/v1/murals/#{mural_id}/widgets/shape"
+    )
+      .with(body: [{ shape: 'rectangle', x: 0, y: 0 }])
+      .to_return_json(
+        body: {
+          value: [
+            {
+              id: 'shape-1',
+              shape: 'rectangle',
+              contentEditedBy: {
+                id: 'user-1',
+                firstName: 'John'
+              },
+              type: 'shape'
+            }
+          ]
+        },
+        status: 201
+      )
+
+    create_shape_params =
+      Mural::Widget::CreateShapeParams.new.tap do |params|
+        params.shape = 'rectangle'
+        params.x = 0
+        params.y = 0
+      end
+
+    shapes = @client.mural_content.create_shapes(
+      mural_id,
+      create_shape_params
+    )
+
+    assert_equal 1, shapes.size
+
+    rectangle = shapes.find { |s| s.shape == 'rectangle' }
+
+    assert_instance_of Mural::Widget::Shape, rectangle
+    assert_equal 'John', rectangle.content_edited_by.first_name
+  end
+
   def test_update_shape
     mural_id = 'mural-1'
     shape_id = 'shape-1'
@@ -84,7 +172,7 @@ def test_update_shape
     )
       .with(body: { title: 'dat shape' })
       .to_return_json(
-        body: { value: { id: 'shape-1', title: 'dat shape' } },
+        body: { value: { id: 'shape-1', title: 'dat shape', type: 'shape' } },
         status: 201
       )
 
@@ -115,7 +203,7 @@ def test_update_shape_with_style
     )
       .with(body: { style: { backgroundColor: '#FAFAFAFF' } })
       .to_return_json(
-        body: { value: { id: 'shape-1' } },
+        body: { value: { id: 'shape-1', type: 'shape' } },
         status: 201
       )
 
diff --git a/test/mural/client/mural_content/test_sticky_notes.rb b/test/mural/client/mural_content/test_sticky_notes.rb
index f60c974..0b3a878 100644
--- a/test/mural/client/mural_content/test_sticky_notes.rb
+++ b/test/mural/client/mural_content/test_sticky_notes.rb
@@ -7,6 +7,54 @@ def setup
     @client = Mural::Client.new
   end
 
+  def test_create_sticky_note_params
+    want = %i[
+      height
+      hidden
+      html_text
+      hyperlink
+      hyperlink_title
+      instruction
+      parent_id
+      presentation_index
+      rotation
+      shape
+      stacking_order
+      style
+      tags
+      text
+      title
+      width
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::CreateStickyNoteParams.attrs.keys.sort
+  end
+
+  def test_update_sticky_note_params
+    want = %i[
+      height
+      hidden
+      html_text
+      hyperlink
+      hyperlink_title
+      instruction
+      parent_id
+      presentation_index
+      rotation
+      style
+      tags
+      text
+      title
+      width
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::UpdateStickyNoteParams.attrs.keys.sort
+  end
+
   def test_create_sticky_notes
     mural_id = 'some-mural-1'
 
@@ -16,7 +64,10 @@ def test_create_sticky_notes
       '/sticky-note'
     )
       .with(body: [{ text: 'My sticky' }])
-      .to_return_json(body: { value: [{ id: 'sticky-1' }] }, status: 201)
+      .to_return_json(
+        body: { value: [{ id: 'sticky-1', type: 'sticky note' }] },
+        status: 201
+      )
 
     create_sticky_note_params =
       Mural::Widget::CreateStickyNoteParams.new.tap do |sticky_note|
@@ -29,9 +80,50 @@ def test_create_sticky_notes
       .create_sticky_notes(mural_id, create_sticky_note_params)
 
     assert_equal 1, created_sticky_notes.size
+    assert_instance_of Mural::Widget::StickyNote, created_sticky_notes.first
     assert_equal 'sticky-1', created_sticky_notes.first.id
   end
 
+  def test_should_decode_content_edited_by
+    mural_id = 'some-mural-1'
+
+    stub_request(
+      :post,
+      "https://app.mural.co/api/public/v1/murals/#{mural_id}/widgets" \
+      '/sticky-note'
+    )
+      .with(body: [{ text: 'My sticky' }])
+      .to_return_json(
+        body: {
+          value: [
+            {
+              id: 'sticky-1',
+              contentEditedBy: { id: 'user-1', firstName: 'John' },
+              type: 'sticky note'
+            }
+          ]
+        },
+        status: 201
+      )
+
+    create_sticky_note_params =
+      Mural::Widget::CreateStickyNoteParams.new.tap do |sticky_note|
+        sticky_note.text = 'My sticky'
+      end
+
+    created_sticky_notes =
+      @client
+      .mural_content
+      .create_sticky_notes(mural_id, create_sticky_note_params)
+
+    assert_equal 1, created_sticky_notes.size
+
+    sticky_note = created_sticky_notes.first
+
+    assert_equal 'sticky-1', sticky_note.id
+    assert_instance_of Mural::Widget::StickyNote, sticky_note
+  end
+
   def test_create_sticky_notes_with_style
     mural_id = 'some-mural-1'
 
@@ -44,7 +136,7 @@ def test_create_sticky_notes_with_style
         body: [{ text: 'My sticky', style: { backgroundColor: '#FAFAFAFF' } }]
       )
       .to_return_json(
-        body: { value: [{ id: 'sticky-1' }] },
+        body: { value: [{ id: 'sticky-1', type: 'sticky note' }] },
         status: 201
       )
 
@@ -63,6 +155,7 @@ def test_create_sticky_notes_with_style
       .create_sticky_notes(mural_id, create_sticky_note_params)
 
     assert_equal 1, created_sticky_notes.size
+    assert_instance_of Mural::Widget::StickyNote, created_sticky_notes.first
     assert_equal 'sticky-1', created_sticky_notes.first.id
   end
 
@@ -76,7 +169,7 @@ def test_update_sticky_note
       "/sticky-note/#{widget_id}"
     )
       .with(body: { text: 'updated text' })
-      .to_return_json(body: { value: { id: widget_id } })
+      .to_return_json(body: { value: { id: widget_id, type: 'sticky note' } })
 
     update_params =
       Mural::Widget::UpdateStickyNoteParams.new.tap do |params|
@@ -87,6 +180,7 @@ def test_update_sticky_note
                      .update_sticky_note(mural_id, widget_id, update_params)
 
     assert_equal widget_id, updated.id
+    assert_instance_of Mural::Widget::StickyNote, updated
   end
 
   def test_update_sticky_note_with_style
@@ -99,7 +193,7 @@ def test_update_sticky_note_with_style
       "/sticky-note/#{widget_id}"
     )
       .with(body: { style: { bold: true } })
-      .to_return_json(body: { value: { id: widget_id } })
+      .to_return_json(body: { value: { id: widget_id, type: 'sticky note' } })
 
     update_params =
       Mural::Widget::UpdateStickyNoteParams.new.tap do |params|
@@ -113,5 +207,6 @@ def test_update_sticky_note_with_style
                      .update_sticky_note(mural_id, widget_id, update_params)
 
     assert_equal widget_id, updated.id
+    assert_instance_of Mural::Widget::StickyNote, updated
   end
 end
diff --git a/test/mural/client/mural_content/test_tables.rb b/test/mural/client/mural_content/test_tables.rb
index 76d35ea..7a1c391 100644
--- a/test/mural/client/mural_content/test_tables.rb
+++ b/test/mural/client/mural_content/test_tables.rb
@@ -5,6 +5,47 @@ def setup
     @client = Mural::Client.new
   end
 
+  def test_create_table_cell_params
+    want = %i[
+      col_span
+      column_id
+      height
+      rotation
+      row_id
+      row_span
+      style
+      text_content
+      width
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::CreateTableCellParams.attrs.keys.sort
+  end
+
+  def test_create_table_params
+    want = %i[
+      auto_resize
+      cells
+      columns
+      height
+      hidden
+      instruction
+      parent_id
+      presentation_index
+      rotation
+      rows
+      stacking_order
+      style
+      title
+      width
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::CreateTableParams.attrs.keys.sort
+  end
+
   def test_create_table
     mural_id = 'mural-1'
 
diff --git a/test/mural/client/mural_content/test_text_boxes.rb b/test/mural/client/mural_content/test_text_boxes.rb
index 88ea977..3b1fe05 100644
--- a/test/mural/client/mural_content/test_text_boxes.rb
+++ b/test/mural/client/mural_content/test_text_boxes.rb
@@ -5,6 +5,89 @@ def setup
     @client = Mural::Client.new
   end
 
+  def test_create_text_box_params
+    want = %i[
+      height
+      hidden
+      hyperlink
+      hyperlink_title
+      instruction
+      parent_id
+      presentation_index
+      rotation
+      stacking_order
+      style
+      text
+      title
+      width
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::CreateTextBoxParams.attrs.keys.sort
+  end
+
+  def test_update_text_box_params
+    want = %i[
+      height
+      hidden
+      hyperlink
+      hyperlink_title
+      instruction
+      parent_id
+      presentation_index
+      rotation
+      style
+      text
+      title
+      width
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::UpdateTextBoxParams.attrs.keys.sort
+  end
+
+  def test_should_decode_content_edited_by
+    mural_id = 'mural-1'
+
+    stub_request(
+      :post,
+      "https://app.mural.co/api/public/v1/murals/#{mural_id}/widgets/textbox"
+    )
+      .with(body: [{ text: 'Hello world' }])
+      .to_return_json(
+        body: { value: [
+          {
+            id: 'text-box-1',
+            text: 'Hello world',
+            contentEditedBy: { id: 'user-1', firstName: 'John' },
+            type: 'text'
+          }
+        ] },
+        status: 201
+      )
+
+    create_text_box_params = [
+      Mural::Widget::CreateTextBoxParams.new.tap do |t|
+        t.text = 'Hello world'
+      end
+    ]
+
+    text_boxes = @client.mural_content.create_text_boxes(
+      mural_id,
+      create_text_box_params
+    )
+
+    assert_equal 1, text_boxes.size
+
+    text_box = text_boxes.first
+
+    assert_instance_of Mural::Widget::Text, text_box
+    assert_equal 'Hello world', text_box.text
+    assert_equal 'John', text_box.content_edited_by.first_name
+  end
+
   def test_create_text_boxes
     mural_id = 'mural-1'
 
@@ -20,11 +103,12 @@ def test_create_text_boxes
       )
       .to_return_json(
         body: { value: [
-          { id: 'text-box-1', text: 'Hello world' },
+          { id: 'text-box-1', text: 'Hello world', type: 'text' },
           {
             id: 'text-box-2',
             text: 'Bonjour monde',
-            style: { backgroundColor: '#FAFAFAFF' }
+            style: { backgroundColor: '#FAFAFAFF' },
+            type: 'text'
           }
         ] },
         status: 201
@@ -73,7 +157,7 @@ def test_update_text_box
     )
       .with(body: { text: 'Hola mundo' })
       .to_return_json(
-        body: { value: { id: text_box_id, text: 'Hola mundo' } }
+        body: { value: { id: text_box_id, text: 'Hola mundo', type: 'text' } }
       )
 
     update_text_box_params = Mural::Widget::UpdateTextBoxParams.new.tap do |t|
@@ -101,7 +185,11 @@ def test_update_text_box_with_style
       .with(body: { style: { backgroundColor: '#FAFAFAFF' } })
       .to_return_json(
         body: {
-          value: { id: text_box_id, style: { backgroundColor: '#FAFAFAFF' } }
+          value: {
+            id: text_box_id,
+            style: { backgroundColor: '#FAFAFAFF' },
+            type: 'text'
+          }
         }
       )
 
diff --git a/test/mural/client/mural_content/test_titles.rb b/test/mural/client/mural_content/test_titles.rb
index 23266e5..3a7f3f5 100644
--- a/test/mural/client/mural_content/test_titles.rb
+++ b/test/mural/client/mural_content/test_titles.rb
@@ -5,6 +5,49 @@ def setup
     @client = Mural::Client.new
   end
 
+  def test_create_title_params
+    want = %i[
+      height
+      hidden
+      hyperlink
+      hyperlink_title
+      instruction
+      parent_id
+      presentation_index
+      rotation
+      stacking_order
+      style
+      text
+      title
+      width
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::CreateTitleParams.attrs.keys.sort
+  end
+
+  def test_update_title_params
+    want = %i[
+      height
+      hidden
+      hyperlink
+      hyperlink_title
+      instruction
+      parent_id
+      presentation_index
+      rotation
+      style
+      text
+      title
+      width
+      x
+      y
+    ]
+
+    assert_equal want, Mural::Widget::UpdateTitleParams.attrs.keys.sort
+  end
+
   def test_create_titles
     mural_id = 'mural-1'
 
@@ -20,11 +63,12 @@ def test_create_titles
       )
       .to_return_json(
         body: { value: [
-          { id: 'title-1', text: 'Hello world' },
+          { id: 'title-1', text: 'Hello world', type: 'text' },
           {
             id: 'title-2',
             text: 'Bonjour monde',
-            style: { backgroundColor: '#FAFAFAFF' }
+            style: { backgroundColor: '#FAFAFAFF' },
+            type: 'text'
           }
         ] },
         status: 201
@@ -59,6 +103,43 @@ def test_create_titles
     assert_equal '#FAFAFAFF', title_with_style.style.background_color
   end
 
+  def test_should_decode_content_edited_by
+    mural_id = 'mural-1'
+
+    stub_request(
+      :post,
+      "https://app.mural.co/api/public/v1/murals/#{mural_id}/widgets/title"
+    )
+      .with(body: [{ text: 'Hello world' }])
+      .to_return_json(
+        body: {
+          value: [
+            {
+              id: 'title-1',
+              text: 'Hello world',
+              contentEditedBy: { id: 'user-1', firstName: 'John' },
+              type: 'text'
+            }
+          ]
+        },
+        status: 201
+      )
+
+    create_title_params =
+      Mural::Widget::CreateTitleParams.new.tap do |t|
+        t.text = 'Hello world'
+      end
+
+    titles = @client.mural_content.create_titles(mural_id, create_title_params)
+
+    assert_equal 1, titles.size
+
+    title = titles.first
+
+    assert_instance_of Mural::Widget::Text, title
+    assert_equal 'John', title.content_edited_by.first_name
+  end
+
   def test_update_title
     mural_id = 'mural-1'
     title_id = 'title-1'
@@ -70,7 +151,7 @@ def test_update_title
     )
       .with(body: { text: 'Hola mundo' })
       .to_return_json(
-        body: { value: { id: title_id, text: 'Hola mundo' } }
+        body: { value: { id: title_id, text: 'Hola mundo', type: 'text' } }
       )
 
     update_title_params = Mural::Widget::UpdateTitleParams.new.tap do |t|
@@ -98,7 +179,11 @@ def test_update_title_with_style
       .with(body: { style: { backgroundColor: '#FAFAFAFF' } })
       .to_return_json(
         body: {
-          value: { id: title_id, style: { backgroundColor: '#FAFAFAFF' } }
+          value: {
+            id: title_id,
+            style: { backgroundColor: '#FAFAFAFF' },
+            type: 'text'
+          }
         }
       )