upgrade_registration: TxDescriptor<
    {
        cid: { digest: FixedSizeBinary<4>; geohash: FixedSizeBinary<5> };
        proof: {
            attendee_public: SS58String;
            attendee_signature: MultiSignature;
            ceremony_index: number;
            community_identifier: {
                digest: FixedSizeBinary<4>;
                geohash: FixedSizeBinary<5>;
            };
            prover_public: SS58String;
        };
    },
>