The paymentRequest object allows to transmit payment details.
It has the following attributes:
Amount for which strong authentication is required (will be visible on the authentication page).
must be expressed in the smallest currency unit (cents for euro).
May be sent at "0", specifically when the method verifyThreeDSEnrollment is called before creating a token.
Currency code of the transaction (ISO 4217 standard).
E.g.: 978 for euro (EUR)