TransactionTx..::..Action Field
TxAction has the following variants:
Transfer - represents transactions triggered by Transfer, TransferFrom, Send, and SendFrom. The fields in this object correspond to the fields described in TransferHistory.
see https://github.com/SecretFoundation/SNIPs/blob/master/SNIP-21.md#Transaction-History
Namespace:
SecretNET.TokenAssembly: SecretNET.Token (in SecretNET.Token.dll)