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    Type Alias UpdatedBestFinalizedHeader

    UpdatedBestFinalizedHeader: PlainDescriptor<
        {
            grandpa_info: {
                finality_proof: {
                    commit: {
                        precommits: {
                            id: FixedSizeBinary<32>;
                            precommit: { target_hash: FixedSizeBinary<32>; target_number: number };
                            signature: FixedSizeBinary<64>;
                        }[];
                        target_hash: FixedSizeBinary<32>;
                        target_number: number;
                    };
                    round: bigint;
                    votes_ancestries: {
                        digest: DigestItem[];
                        extrinsics_root: FixedSizeBinary<32>;
                        number: number;
                        parent_hash: FixedSizeBinary<32>;
                        state_root: FixedSizeBinary<32>;
                    }[];
                };
                new_verification_context?: {
                    authorities: [FixedSizeBinary<32>, bigint][];
                    set_id: bigint;
                };
            };
            hash: FixedSizeBinary<32>;
            number: number;
        },
    >

    Best finalized chain header has been updated to the header with given number and hash.