Some merchants and platforms may have the option to decrypt a Google Pay token themselves. For this scenario, we support direct pass through of these decrypted Google Pay tokens to our API using the network-token method. 
{
  "method": "network-token",
  "token": "4111111111111111",
  "expiration_date": "02/30",
  "cryptogram": "AAEBAwQjSQAAXX...",
  "eci": "05",
  "card_suffix": "1234", 
  "card_scheme": "visa",
  "card_source": "google-pay",
  "cardholder_name": "John Smith"
}