{
  "config": {
    "type": "object",
    "properties": {
      "properties": {
        "type": "object",
        "patternProperties": {
          "^/.*$": {
            "type": [
              "string",
              "boolean",
              "number"
            ],
            "description": "A value of a key."
          }
        },
        "additionalProperties": false
      }
    },
    "required": [
      "properties"
    ]
  }
}