curl --request GET \
  --url https://api.example.com/cabinet/admin/referral-network/user/{user_id} \
  --header 'Authorization: Bearer <token>'

{
  "id": 123,
  "tg_id": 123,
  "username": "<string>",
  "email": "<string>",
  "display_name": "<string>",
  "is_partner": true,
  "referrer_id": 123,
  "referrer_display_name": "<string>",
  "campaign_id": 123,
  "campaign_name": "<string>",
  "direct_referrals": 123,
  "total_branch_users": 123,
  "branch_revenue_kopeks": 123,
  "personal_revenue_kopeks": 123,
  "personal_spent_kopeks": 123,
  "subscription_name": "<string>",
  "subscription_end": "<string>",
  "registered_at": "<string>"
}