{
  "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"
            }
          }
        }
      }
    }
  }
}