{
"event": "message.send.failed",
"data": {
"id": "string",
"request_id": "string",
"message_thread_id": "string",
"phone_id": "string",
"from_phone_number": "string",
"to_phone_number": "string",
"content": "string",
"schedule_on_phone_at": "string",
"sent_at": "string",
"last_attempted_at": "string",
"delivered_at": "string",
"send_attempt_count": 0,
"max_send_attempts": 0,
"message_expiration_seconds": 0,
"timezone": "string",
"sim": "string",
"status": "string",
"type": "string",
"created_at": "string",
"updated_at": "string"
}
}