{
    "type": "object",
    "additionalProperties": false,
    "required": [
        "$let",
        "in"
    ],
    "properties": {
        "$let": {
            "type": "object",
            "additionalProperties": false,
            "required": [
                "x"
            ],
            "properties": {
                "x": {
                    "type": "array",
                    "items": {
                        "type": "integer",
                        "minimum": 0,
                        "multipleOf": 10
                    }
                }
            }
        },
        "in": {
            "type": "object",
            "additionalProperties": false,
            "required": [
                "$reverse"
            ],
            "properties": {
                "$reverse": {
                    "type": "object",
                    "additionalProperties": false,
                    "required": [
                        "$sort",
                        "by(x)"
                    ],
                    "properties": {
                        "$sort": {
                            "type": "object",
                            "additionalProperties": false,
                            "required": [
                                "$eval"
                            ],
                            "properties": {
                                "$eval": {
                                    "type": "string"
                                }
                            }
                        },
                        "by(x)": {
                            "type": "string"
                        }
                    }
                }
            }
        }
    }
}