OptionalactivityOptionalauthorOptionalcontentThe content of the message.
Optionaldeletedtrue if the message serves as a placeholder for one that has been deleted.
OptionalidThe unique ID of the message.
OptionalmetadataOptionalquotedThe quoted message is currently only available for WhatsApp and Web Messenger formResponse messages.
OptionalreceivedA datetime string with the format YYYY-MM-DDThh:mm:ss.SSSZ representing when Sunshine Conversations received the message.
Optionalsource
Details of the system activity that generated this message. This field is used when actions taken by the system generate a persisted message to notify the user or agent of an event that occurred. For example, when a user's Ticket gets closed. This property applies only to informational text messages generated via system events.