curl --request GET \
  --url https://api.gcore.com/billing/org/v1/subscriptions/{id} \
  --header 'Authorization: <api-key>'

{
  "id": 123,
  "client_id": 123,
  "client": {
    "id": 2,
    "company_name": "<string>"
  },
  "feature": {
    "id": 123,
    "name": "<string>",
    "erp_sku_id": "<string>"
  },
  "metric_ext_name": "<string>",
  "calc_rule_type": "<string>",
  "active_range": {
    "start": "2023-11-07T05:31:56Z",
    "end": "2023-11-07T05:31:56Z"
  },
  "price": "<string>",
  "product": {
    "id": 123,
    "name": "<string>",
    "internal_name": "<string>"
  },
  "product_category": {
    "id": 123,
    "name": "<string>"
  },
  "regions": [
    {
      "id": 123,
      "name": "<string>",
      "external_name": "<string>"
    }
  ],
  "created_at": "2023-11-07T05:31:56Z",
  "description": "<string>",
  "comment": "<string>"
}