tx_type
tx_type:
"pay"|"keyreg"|"acfg"|"axfer"|"afrz"|"appl"|"stpf"
[type] Indicates what type of transaction this is. Different types have different fields.
Valid types, and where their fields are stored:
- [pay] payment-transaction
 - [keyreg] keyreg-transaction
 - [acfg] asset-config-transaction
 - [axfer] asset-transfer-transaction
 - [afrz] asset-freeze-transaction
 - [appl] application-transaction
 - [stpf] state-proof-transaction
 
Defined in
types.gen.ts:1022