{
  "input": {
    "type": "track",
    "userId": "user-id",
    "event": "my-event",
    "timestamp": "2014",
    "properties": {
      "searchEngine": "google",
      "username": "jd",
      "email": "jd@example.com",
      "referrer": "someone",
      "query": "analytics"
    },
    "context": {
      "ip": "10.0.0.1"
    }
  },
  "output": {
    "event": "my-event",
    "properties": {
      "$search_engine": "google",
      "$referrer": "someone",
      "$username": "jd",
      "email": "jd@example.com",
      "mp_name_tag": "user-id",
      "mp_lib": "Segment: unknown",
      "ip": "10.0.0.1",
      "time": 1388534400,
      "id": "user-id",
      "token": "89f86c4aa2ce5b74cb47eb5ec95ad1f9",
      "distinct_id": "user-id"
    }
  }
}