pei req

{
    "PortalUrl": "https://gattinstaging.pei.is/",
    "ApiUrl": " https://externalapistaging.pei.is/",
    "TokenEndpointUrl": "https://authstaging.pei.is/core/connect/token/",
    "PostbackUrl": "http://michelsen-584.test.vettvangur.info/payment-providers/payment-providers/Pei?uniqueId=b201bcd2-1d32-40b7-8043-cdfe5448ee58",
    "SuccessReturnUrl": "http://michelsen-584.test.vettvangur.info/karfa/upplysingar/pontun/kvittun/",
    "CancelReturnUrl": "http://michelsen-584.test.vettvangur.info/karfa/upplysingar/pontun/kaup-gengu-thvi-midur-ekki-i-gegn/",
    "ClientId": "testclient",
    "Secret": "secret",
    "MerchantId": "1",
    "Amount": 17200.0,
    "Items": [{
            "ItemNumber": 0,
            "Code": "FS5325",
            "Name": "Fossil The Commuter FS5325",
            "Quantity": 1,
            "UnitPrice": 17200.0,
            "Amount": 17200.0
        }, {
            "ItemNumber": 1,
            "Code": "Shipping",
            "Name": "Sækja",
            "Quantity": 1,
            "UnitPrice": 0.0,
            "Amount": 0.0
        }
    ],
    "Buyer": {
        "Name": "Gunnar ",
        "Ssn": "2008862919",
        "Email": "gunni@starcraft.is",
        "MobileNumber": "7775330"
    },
    "SubscriptionOptions": null
}