{
    "type":"object",
    "required":true,
    "properties":{
        "command": {
            "type" : "string",
            "required" : true,
            "enum" : ["image"]
        },
        "priority": {
            "type": "integer",
            "required": true
        },
        "duration": {
            "type": "integer",
            "required": false
        },
        "imagewidth": {
            "type" : "integer",
            "required": true,
            "minimum": 0
        },
        "imageheight": {
            "type" : "integer",
            "required": true,
            "minimum": 0
        },
        "imagedata": {
            "type": "string",
            "required": true
        }
    },
    "additionalProperties": false
}