export interface APIMessageActivityhttps://discord.com/developers/docs/resources/channel#message-object-message-activity-structure
optionalparty_id? : string
party_id from a Rich Presence eventSee https://discord.com/developers/docs/rich-presence/how-to#updating-presence-update-presence-payload-fields
type : MessageActivityType
Type of message activitySee https://discord.com/developers/docs/resources/channel#message-object-message-activity-types