ProposalStateUpdated: PlainDescriptor<{
    proposal_id: bigint;
    proposal_state: Enum<{
        Approved: undefined;
        Confirming: {
            since: bigint;
        };
        Enacted: undefined;
        Ongoing: undefined;
        Rejected: undefined;
        SupersededBy: {
            id: bigint;
        };
    }>;
}>