{
  "input": {
    "type": "alias",
    "previousId": "prev-id",
    "userId": "user-id",
    "timestamp": "2014",
    "context": {
      "ip": "10.0.0.1"
    }
  },
  "output": {
    "type": "alias",
    "previousId": "prev-id",
    "userId": "user-id",
    "timestamp": {},
    "context": {
      "ip": "10.0.0.1"
    }
  }
}