MessageType: "Regular" | "RecipientAdd" | "RecipientRemove" | "Call" | "ChannelNameChange" | "ChannelIconChange" | "ChannelMessagePinned" | "GuildMemberJoin" | "UserPremiumSub" | "UserPremiumSubTier1" | "UserPremiumSubTier2" | "UserPremiumSubTier3" | "ChannelFollowAdd" | "GuildDiscoveryDisqualified" | "GuildDiscoveryRequalified" | "GuildDiscoveryGracePeriodInitialWarning" | "GuildDiscoveryGracePeriodFinalWarning" | "Reply" | "GuildInviteReminder" | "ChatInputCommand" | "ThreadCreated" | "ThreadStarterMessage" | "ContextMenuCommand" | "AutoModerationAction" | "RoleSubscriptionPurchase" | "InteractionPremiumUpsell" | "GuildApplicationPremiumSubscription" | "StageEnd" | "StageSpeaker" | "StageStart" | "StageTopic" | "GuildIncidentAlertModeEnabled" | "GuildIncidentAlertModeDisabled" | "GuildIncidentReportRaid" | "GuildIncidentReportRaidFalseAlarm" | "PurchaseNotification" | "PollResult"