{
  "input": {
    "type": "identify",
    "userId": "user-id",
    "timestamp": "2014",
    "traits": {
      "created": "2014-01-01",
      "email": "jd@example.com",
      "firstName": "john",
      "lastName": "doe",
      "race": {
        "finish": "2014-01-02",
        "start": "2014-01-01"
      }
    }
  },
  "output": {
    "user_id": "user-id",
    "email": "jd@example.com",
    "last_request_at": 1388534400,
    "remote_created_at": 1388534400,
    "name": "john doe",
    "custom_attributes": {
      "created_at": 1388534400,
      "email": "jd@example.com",
      "firstName": "john",
      "lastName": "doe",
      "id": "user-id",
      "race": {
        "finish_at": 1388620800,
        "start_at":  1388534400
      }
    }
  }
}