Optionalexisting_Set to true if target channel's conversation thread already existed at the moment the shortlink was visited. Set to false if a new conversation thread began when the shortlink was visited.
OptionalpayloadRefers to the payload previously configured to be sent in the postback.
OptionalrefThe ref parameter from the shortlink the user visited.
OptionalsourceDefaults to "SHORTLINK" for this type of event.
OptionaltitleOnly relevant for the Instagram channel.
OptionaltypeThe identifier for the referral. For Instagram and Messenger shortlinks, this is always set to "OPEN_THREAD".
Object reflecting an event that is created when a contact visits a shortlink. Currently, this is only supported for the Messenger and Instagram channels. See Shortlink Activated Event for more details.