{
  "actor": {
    "account" : {
      "name": "user",
      "homePage": "http://localhost/"
    }
  },
  "verb" : {
    "id":"http://example.com/commented",
    "display": {
      "en-US":"commented"
    }
  },
  "object" : {
    "objectType":"Agent",
    "account" : {
      "name": "teacher",
      "homePage": "http://localhost/"
    }
  },
  "result" : {
    "response" : "Wow, nice work!"
  }
}