Billing

{
    "currency-code": "USD",
    "amount": 12.34,
    "product-desc": "Product Description",
    "card": {
        "holder": "John Doe",
        "number": "4242424242424242",
        "exp-y": "2030",
        "exp-m": "11",
        "cvv": "123"
    }
}