{
  "event": {
    "header": {
      "namespace": "Alexa",
      "name": "ChangeReport",
      "messageId": "a unique identifier, preferably a version 4 UUID",
      "payloadVersion": "3"
    },
    "endpoint": {
      "scope": {
        "type": "BearerToken",
        "token": "an OAuth2 bearer token"
      },
      "endpointId": "endpoint ID"
    },
    "payload": {
      "change": {
        "cause": {
          "type": "PERIODIC_POLL"
        },
        "properties": [
          {
            "namespace": "Alexa.HumiditySensor",
            "name": "relativeHumidity",
            "value": {
              "value": 92.5
            },
            "timeOfSample": "2023-02-03T16:20:50.52Z",
            "uncertaintyInMilliseconds": 0
          }
        ]
      }
    }
  },
  "context": {
    "properties": [
      {
        "namespace": "Alexa.TemperatureSensor",
        "name": "temperature",
        "value": {
          "value": 19.9,
          "scale": "CELSIUS"
        },
        "timeOfSample": "2023-02-03T16:20:50.52Z",
        "uncertaintyInMilliseconds": 0
      },
      {
        "namespace": "Alexa.EndpointHealth",
        "name": "connectivity",
        "value": {
          "value": "OK"
        },
        "timeOfSample": "2022-06-03T16:20:50Z",
        "uncertaintyInMilliseconds": 0
      }
    ]
  }
}