The payment card to use to fund a Google Pay payment response. Can be a credit or debit card.
typeenum<card_type>Optionalbrandenum<card_brand>Optionalbilling_addressobject<address_portable>Optionaladmin_area_4stringOptionaladmin_area_3stringOptionaladmin_area_1stringOptionalcountry_codestring<country_code>RequiredNote: The country code for Great Britain isGBand notUKas used in the top-level domain names for that country. Use the `C2` country code for China worldwide for comparable uncontrolled price (CUP) method, bank card, and cross-border transactions.
address_detailsobject<Address Details>Optionalauthentication_resultobject<authentication_response>Optionalliability_shiftenum<liability_shift>Optionalthree_d_secureobject<three_d_secure_authentication_response>Optionalauthentication_statusenum<pares_status>Optionalenrollment_statusenum<enrolled>Optional