The payment card used to fund a Google Pay payment. Can be a credit or debit card.
expirystring<date_year_month>Optionaltypeenum<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>Optional