curl --request GET \
  --url https://api.steamgold.dev/v1/gifts/catalog/{appId} \
  --header 'Authorization: Bearer <token>'

{
  "appId": 123,
  "slug": "<string>",
  "title": "<string>",
  "headerImage": "<string>",
  "shortDescription": "<string>",
  "genres": [
    "<string>"
  ],
  "isDlc": true,
  "editions": [
    {
      "edition": "<string>",
      "packageId": 123,
      "regions": [
        {
          "region": "US",
          "paymentAmount": 123,
          "paymentCurrency": "RUB",
          "paymentAmountFull": 123,
          "discountPercent": 123
        }
      ]
    }
  ]
}