Objeto PaymentDiscount
identifier
string - Una cadena usada para identificar de forma única una oferta de descuento para un producto.keyIdentifier
string - A string that identifies the key used to generate the signature.nonce
string - A universally unique ID (UUID) value that you define.signature
string - A UTF-8 string representing the properties of a specific discount offer, cryptographically signed.timestamp
number - The date and time of the signature's creation in milliseconds, formatted in Unix epoch time.