{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "type": "array",
    "items": {
        "type": "object",
        "properties": {
            "id": {
                "type": "number"
            },
            "layers": {
                "type": "array",
                "items": {
                    "type": "string"
                }
            }
        },
        "required": [
            "id",
            "layers"
        ]
    },
    "properties": {},
    "additionalProperties": false
}