curl --request GET \
  --url http://localhost:8080/cabinet/admin/stats/campaigns/top

{
  "campaigns": [
    {
      "id": 123,
      "name": "<string>",
      "start_parameter": "<string>",
      "bonus_type": "<string>",
      "is_active": true,
      "registrations": 123,
      "conversions": 123,
      "conversion_rate": 123,
      "total_revenue_kopeks": 123,
      "avg_revenue_per_user_kopeks": 123,
      "created_at": "<string>"
    }
  ],
  "total_campaigns": 123,
  "total_registrations": 123,
  "total_revenue_kopeks": 123
}