UpdateJourneyRequest : Partial update applied with JSON Merge Patch (RFC 7396). Send only the fields you want to change. A null value clears a nullable field. Arrays such as nodes are replaced wholesale.
Target state. Set active to activate a draft journey, or scheduled together with a future schedule.start_at to activate it later. Set archived to stop a running journey; archiving is permanent. Only scheduled and processing journeys can return to draft.