Metal Keychain

{
  "product": { "id": "metal-keychain", "revision": 1 },
  "quantity": 1,
  "assets": [
    { "role": "front", "url": "https://cdn.example.com/orders/metal-front.jpg", "pixel_width": 3000, "pixel_height": 2200 },
    { "role": "back", "url": "https://cdn.example.com/orders/metal-back.jpg", "pixel_width": 3000, "pixel_height": 2200 }
  ]
}