{

        "$schema": "http://json-schema.org/draft-04/schema#",
        "type": "object",
        "properties": {
            "sensorId": {
                "type": "string"
            },
            "temperature": {
                "type": "object",
                "properties": {
                    "old": {
                        "type": "number"
                    },
                    "new": {
                        "type": "number"
                    }
                }
            }
        }
    
}