curl --request GET \
  --url http://localhost:8080/cabinet/admin/promo-offers

{
  "items": [
    {
      "id": 123,
      "user_id": 123,
      "is_active": true,
      "subscription_id": 123,
      "notification_type": "<string>",
      "discount_percent": 123,
      "bonus_amount_kopeks": 123,
      "expires_at": "2023-11-07T05:31:56Z",
      "claimed_at": "2023-11-07T05:31:56Z",
      "effect_type": "<string>",
      "extra_data": {},
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z",
      "user": {
        "id": 123,
        "telegram_id": 123,
        "email": "<string>",
        "username": "<string>",
        "first_name": "<string>",
        "last_name": "<string>",
        "full_name": "<string>"
      }
    }
  ],
  "total": 123,
  "limit": 123,
  "offset": 123
}