Optionalaccept_Optionalchannel_Optionalcontact_The ID of the contact. Will be empty if processing_mode is DISPATCH.
Optionalcontact_Optionalconversation_The ID of the conversation this event is part of. Will be empty if processing_mode is DISPATCH.
OptionaldirectionThe direction of the event. It's always TO_APP for contact events.
OptionalidThe event ID.
Optionalprocessing_
Timestamp marking when the channel callback was received by the Conversation API.