curl -X GET \
-H "QB-Token: 6f8c8931e80d0d828341ef218e95584ac48195db" \
https://api.quickblox.com/users/96752798.json

{
  "user": {
    "id": 96752798,
    "full_name": "Peter Smith",
    "email": "peter@gmail.com",
    "login": "Peter",
    "phone": "+73123555",
    "website": "https://mysite.com",
    "created_at": "2019-08-27T20:19:08Z",
    "updated_at": "2019-08-27T20:19:08Z",
    "last_request_at": "2019-08-27T20:49:21Z",
    "external_user_id": 1236672,
    "facebook_id": "8887366",
    "twitter_id": "9982366",
    "blob_id": null,
    "custom_data": "lead of marketing team",
    "age_over16": true,
    "allow_statistics_analysis": true,
    "allow_sales_activities": true,
    "parents_contacts": "",
    "user_tags": "marketing,seo"
  }
}

{
  "errors": {
    "base": [
      "Required session does not exist"
    ]
  }
}

{
  "errors": {
    "base": [
      "Forbidden"
    ]
  }
}

{
  "code": null,
  "message": "Couldn't find user"
}

{
  "errors": {
    "id": [
      "should be a positive integer"
    ]
  }
}