transactionData
@SerialName(value = "transaction_data")
OID4VP 1.0: OPTIONAL. Non-empty array of strings, where each string is a base64url-encoded JSON object that contains a typed parameter set with details about the transaction that the Verifier is requesting the End-User to authorize. The Wallet MUST return an error if a request contains even one unrecognized transaction data type or transaction data not conforming to the respective type definition.