AptosRequestEncodeSubmission constructor
      
      AptosRequestEncodeSubmission({})
     
    
    
Implementation
AptosRequestEncodeSubmission(
    {required this.sender,
    required this.sequenceNumber,
    required this.maxGasAmount,
    required this.gasUnitPrice,
    required this.expirationTimestampSecs,
    required this.payload,
    this.secondarySigners});