report_dispute_lost_unsigned: TxDescriptor<
    {
        dispute_proof: {
            kind: SlashingOffenceKind;
            time_slot: { candidate_hash: FixedSizeBinary<32>; session_index: number };
            validator_id: FixedSizeBinary<32>;
            validator_index: number;
        };
        key_owner_proof: {
            session: number;
            trie_nodes: Binary[];
            validator_count: number;
        };
    },
>