Optionalpayload?: {The payload of the event. The contents of this object depend on the type of event.
Optionalconversation?: ConversationTruncatedThe conversation in which the message was sent.
Optionalmessage?: MessageWebhookReadableThe message that was sent.
OptionalrecentNotifications?: MessageWebhookReadable[]Messages sent with the Notification API since the last user message.
conversation:message