| PROPERTY | TYPE | REQUIRED | DESCRIPTION |
|---|---|---|---|
amount (only required for 3DS authentication) | Amount | NO | |
currency (only required for 3DS authentication) | Currency | NO | |
sessionId | String | NO | If the merchant has Sift Science rules enabled, this value will be automatically generated and sent through the library. |
subscriptionId | String | YES | subscriptionId previously created through the subscriptions endpoint. |
userId | String | NO | If the merchant has Sift Science rules enabled, this value will be automatically generated and sent through the library. |