Google Pay through authorize.net payment using dotnet technology c#

Question

I am not able to understand Datavalue, how can I decrypt the Google API output?

var opaqueData = new opaqueDataType { dataDescriptor = "COMMON.ANDROID.INAPP.PAYMENT", dataValue= apiToken };

Both errors are showing.

"E00027" The transaction was unsuccessful.

Error code: 153 "There was an error processing the payment data. Unable to decrypt data."