MultisigTransactionRequest: {
    baseGas: string;
    data?: string;
    gasPrice: string;
    gasToken: string;
    nonce: string;
    operation: Operation;
    origin?: string;
    refundReceiver?: string;
    safeTxGas: string;
    safeTxHash: string;
    sender: string;
    signature?: string;
    to: string;
    value: string;
}