{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "title": "MotionActivityItem",
    "type": "object",
    "additionalProperties": false,
    "description": "Motion Item for MotionActivity",
    "properties": {
        "activity_type": {
            "type": "string",
            "enum": [
                "automotive",
                "cycling",
                "running",
                "walking",
                "tilting",
                "stationary",
                "unknown"
            ],
            "description": "Motion detected by Android/iOS platform"
        },
        "confidence": {
            "type": "number",
            "description": "The motion confidence"
        },
        "timestamp": {
            "type": "number",
            "description": "The UNIX timestamp in millisecond"
        }
    },
    "required": [
        "activity_type",
        "timestamp"
    ]
}