{
    "$id": "http://nested-id.example",
    "$schema": "http://json-schema.org/draft-07/schema#",
    "type": "object",
    "properties": {
        "nestedtool": {
            "type": "object",
            "properties": {
                "two": { "type": "integer" }
            },
            "additionalProperties": false
        }
    },
    "additionalProperties": false
}
