The chat the message belongs to.
Identifier of the message. Use messageProperties.can_edit_scheduling_state to check whether the message is suitable.
The new message scheduling state; pass null to send the message immediately. Must be null for messages in the state messageSchedulingStateSendWhenVideoProcessed.
Edits the time when a scheduled message will be sent. Scheduling state of all messages in the same album or forwarded together with the message will be also changed. Request type for Tdjson#editMessageSchedulingState.