API v9InterfacesAPIMessageActivityVersion: 0.37.112On this pageAPIMessageActivity https://discord.com/developers/docs/resources/channel#message-object-message-activity-structureIndex Propertiesparty_idtypeProperties optionalparty_idparty_id?: stringtypetype: MessageActivityType
https://discord.com/developers/docs/resources/channel#message-object-message-activity-structure