{
    // address in memcmp
    const rpc = null as unknown as Rpc<GetProgramAccountsApi>;
    const programAddress = null as unknown as Address;
    const filterAddress = null as unknown as Address;

    rpc.getProgramAccounts(programAddress, {
        filters: [
            {
                memcmp: {
                    bytes: filterAddress,
                    encoding: 'base58',
                    offset: 0n,
                }
            }
        ]
    })
}

type ProgramNotificationsMemcmpFilterBase58 = Readonly<{
    /**
     * The bytes to match, as a base-58 encoded string.
     *
     * Data is limited to a maximum of 128 decoded bytes.
     */
    bytes: Base58EncodedBytes | Address; // add Address here
    /** The encoding to use when decoding the supplied byte string */
    encoding: 'base58';
    /** The byte offset into the account data from which to start the comparison */
    offset: bigint;
}>;