curl --request POST \
  --url https://api.xpaycheckout.com/subscription/link/merchant/generate-link \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '{
  "amount": 100,
  "currency": "USD",
  "receiptId": "order123",
  "customerDetails": {
    "name": "John Doe",
    "email": "john.doe@example.com",
    "contactNumber": 9123456789,
    "customerAddress": {
      "country": "US",
      "postalCode": "2424"
    }
  },
  "description": "Order for 2 items",
  "expiryDate": 32526868154000,
  "callbackUrl": "https://example.com/callback",
  "cancelUrl": "https://example.com/cancel",
  "interval": "MONTH",
  "intervalCount": 2,
  "cycleCount": 2,
  "upfrontAmount": 200,
  "trialPeriodCount": 7,
  "trialPeriodInterval": "DAY",
  "multiUseLimit": 5,
  "productPage": {
    "name": "Premium Subscription",
    "description": "Access to premium features and content"
  }
}'

{
  "shortUrl": "https://api.xpaycheckout.com/subscription/link/pcTrro7D",
  "disclaimer": "GBP is not supported on Klarna. The payment will default to USD."
}