curl --request GET \
  --url https://api.paygentic.io/v0/features/{id} \
  --header 'Authorization: Bearer <token>'

{
  "id": "feat_x1y2z3a4b5c6d7e8",
  "object": "feature",
  "key": "storage-gb",
  "name": "Storage (GB)",
  "type": "metered",
  "merchantId": "org_f9g0h1i2j3k4l5m6",
  "productId": "prod_a1b2c3d4e5f6g7h8",
  "metadata": {
    "unit": "gigabytes",
    "category": "storage"
  },
  "createdAt": "2024-01-08T12:00:00.000Z",
  "updatedAt": "2024-01-08T12:00:00.000Z"
}