curl --request GET \
  --url https://core-proxy-service-w34nvoxnwq-uc.a.run.app/proxy_api/v1/smart/users/{user_id} \
  --header 'Authorization: Bearer <token>'

{
  "username": "<string>",
  "user_id": "<string>",
  "password": "<string>",
  "traffic_limit": 123,
  "traffic_remaining": 123,
  "traffic": 123,
  "status": "<string>",
  "date_created": "2023-11-07T05:31:56Z",
  "whitelisted_ips": [
    "<string>"
  ]
}