toJson method
Converts the request to JSON format.
Implementation
@override
List<dynamic> toJson() {
  return [
    filter.toJson(),
    SolanaRPCUtils.createConfig([
      commitment?.toJson(),
      encoding?.toJson(),
      transactionDetails?.toJson(),
      {"maxSupportedTransactionVersion": maxSupportedTransactionVersion},
      {"showRewards": showRewards}
    ])
  ];
}