POST graph.user.subscribe ✎ Edit on GitHub
Subscribe to be notified about new chat events
Messages about all new chat events will be sent to every Webhook has registered by this method.
Messages about this events are sent to Webhook:: * chat state cupdate (new icon or title); * new chat message (except messages by Webhook / access_token owner); * new chat participant action (user was added or removed from chat, user has left chat)
If a message contains image, video or any other attachment, Webhook message will have it too.
Webhook messages are sent as a HTTP-POST request in a JSON format.
On each such request Webhook should give a 200 HTTP status code response within 5 seconds. If it fails to respond with a correct answer, API will try to send a message again. If Webhook did not respond in 8 hours, it could be removed from subscriptions list.
Webhook message examples
Webhook messages should be same as messages that are being sent by method me/message/post
Plain text message example:
Message with an attachment example: