PaymentRequest

{
    "merchant_reference": "order_12345",
    "merchant_meta": {
        "customer_id": "cust_789",
        "order_type": "retail"
    },
    "amount": 5000,
    "currency": "USD",
    "description": "Premium Subscription - Annual",
    "payment_method": {
        "type": "card",
        "data": "tbjH0nx6WaEkzHOjgw2crsusmVBuL8s+PxWF..."
    },
    "billing_address": {
        "first_name": "John",
        "last_name": "Doe",
        "email": "john.doe@example.com",
        "country": "US",
        "city": "New York",
        "zip": "10001"
    },
    "browser_info": {
        "accept_header": "text/html,application/xhtml+xml",
        "user_agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36",
        "java_enabled": false,
        "javascript_enabled": true,
        "language": "en-US",
        "color_depth": "24",
        "screen_height": "1080",
        "screen_width": "1920",
        "timezone_offset": "-300"
    },
    "ip_address": "203.0.113.42",
    "redirect_url": "https://yoursite.com/payment/callback",
    "webhook_url": "https://yoursite.com/webhooks/payment",
    "enable_3ds": true
}