{
  "event": {
    "header": {
      "namespace": "Alexa",
      "name": "ChangeReport",
      "messageId": "Unique identifier, preferably a version 4 UUID",
      "payloadVersion": "3"
    },
    "endpoint": {
      "scope": {
        "type": "BearerToken",
        "token": "OAuth2.0 bearer token"
      },
      "endpointId": "Endpoint ID"
    },
    "payload": {
      "change": {
        "cause": {
          "type": "PERIODIC_POLL"
        },
        "properties": [
          {
            "namespace": "Alexa.InventoryLevelSensor",
            "instance": "InkSensor.Cyan",
            "name": "level",
            "value": {
              "@type": "Volume",
              "value": 5,
              "unit": "MILLILITER"
            },
            "timeOfSample": "2019-10-31T17:00:00.00Z",
            "uncertaintyInMilliseconds": 0
          },
          {
            "namespace": "Alexa.InventoryLevelSensor",
            "instance": "PaperSensor.FrontTray",
            "name": "level",
            "value": {
              "@type": "Count",
              "value": 200
            },
            "timeOfSample": "2019-10-31T17:00:00.00Z",
            "uncertaintyInMilliseconds": 0
          },
          {
            "namespace": "Alexa.PowerController",
            "name": "powerState",
            "value": "ON",
            "timeOfSample": "2019-10-31T17:00:00.00Z",
            "uncertaintyInMilliseconds": 0
          }
        ]
      }
    }
  },
  "context": {
    "namespace": "Alexa.EndpointHealth",
    "name": "connectivity",
    "value": {
      "value": "OK"
    },
    "timeOfSample": "2019-10-31T16:58:10:00.00Z",
    "uncertaintyInMilliseconds": 0
  }
}