I'm trying to send a notification using firebase api and the notification is sent successfully if I only have "title" and "body" in the notification JSON object. However, if I add "sound":"default" to the notification object, as described in the documentation, I get the following error:
"Invalid JSON payload received. Unknown name \"sound\" at 'message.notification': Cannot find field."
My JSON object is as follows:
{"message":{"token": token, "notification":{"title":"Test", "body":"Test message from server", "sound":"default"}}}