Unsubscribes a user from a group. The unsubscription is associated with a specific message. Notification is sent to the group manager.
Returns success only when the user is unsubscribed from the group and the unsubscription is associated with the specified message.
ID of the user.
ID of the group.
ID of the message.
userId, groupId and messageId are mandatory, but are missing or incorrect. / User with id does not exist. / Group with id does not exist. / Message with id does not exist. / Membership with groupId does not exist.
Error response: {
"errorActor": "CLIENT",
"errorCode": "INVALID_REQUEST",
"message": "Not Found"
}