curl --request GET \
  --url http://localhost:8080/cabinet/admin/campaigns/available-tariffs

[
  {
    "id": 123,
    "name": "<string>",
    "is_active": true,
    "is_trial_available": true,
    "traffic_limit_gb": 123,
    "device_limit": 123,
    "tier_level": 123,
    "display_order": 123,
    "servers_count": 123,
    "subscriptions_count": 123,
    "created_at": "2023-11-07T05:31:56Z",
    "description": "<string>",
    "is_daily": false,
    "daily_price_kopeks": 0,
    "allow_traffic_topup": true
  }
]