{
  "orderId": "clxxxxxxxxxxxxxxxxxxxx",
  "url": "https://YOUR_APP_ORIGIN/checkout/clxxx?embed=1&theme=auto"
}

{
  "error": "Human-readable message"
}

{
  "orderId": "clxxxxxxxx",
  "order": {
    "orderId": "clxxxxxxxx",
    "status": "processing"
  }
}

{
  "order": {},
  "checkoutToken": "token"
}

{
  "success": true
}