Custom data gets deleted in final fcm payload

[SavvyEngineer]

hi Im sending this

{
    "device": "fcm",
    "token": "dW_4sHefRsaPKZoOxwRkYX:APA91bGpQmGOyRzBVL-N2hM50EK3xxIet-MAY0qKkE2aklhEzcnUdFeNVoUKEqrcsAP9tSCUeoijW9CSywbxo4Nv5E7bkE7O0S_SaNQLdNSd4NoEyarZKOvQATwvlbCncIZfBI4C9W4Z",
    "alert":{
        "title": "Test",
        "body": "test hc"
    },
    "custom":{
        "tag": "Test"
    }
}

but in server log

[I 210627 19:48:10 push:111] sending notification to fcm: dW_4sHefRsaPKZoOxwRkYX:APA91bGpQmGOyRzBVL-N2hM50EK3xxIet-MAY0qKkE2aklhEzcnUdFeNVoUKEqrcsAP9tSCUeoijW9CSywbxo4Nv5E7bkE7O0S_SaNQLdNSd4NoEyarZKOvQATwvlbCncIZfBI4C9W4Z
[I 210627 19:48:10 fcm:99] {"message": {"token": "dW_4sHefRsaPKZoOxwRkYX:APA91bGpQmGOyRzBVL-N2hM50EK3xxIet-MAY0qKkE2aklhEzcnUdFeNVoUKEqrcsAP9tSCUeoijW9CSywbxo4Nv5E7bkE7O0S_SaNQLdNSd4NoEyarZKOvQATwvlbCncIZfBI4C9W4Z", "notification": {"title": "Test", "body": "test hc"}}}
[I 210627 19:48:10 fcm:102] access token expiring in 0:54:54...
[I 210627 19:48:16 web:2242] 202 POST /api/v2/push (178.173.153.101) 5486.55ms
[I 210627 19:48:16 __init__:217] PushHandler call ends 5.48636531829834

as you can see there is no custom data please help

[yaro08]

I think you should change "custom" by "extra" key names.