json_scheme.json

{
    "$defs": {
        "Point": {
            "properties": {
                "x": {
                    "title": "X",
                    "type": "number"
                },
                "y": {
                    "title": "Y",
                    "type": "number"
                },
                "z": {
                    "title": "Z",
                    "type": "number"
                }
            },
            "required": [
                "x",
                "y",
                "z"
            ],
            "title": "Point",
            "type": "object"
        }
    },
    "properties": {
        "id": {
            "title": "Id",
            "type": "integer"
        },
        "name": {
            "title": "Name",
            "type": "string"
        },
        "description": {
            "title": "Description",
            "type": "string"
        },
        "number": {
            "title": "Number",
            "type": "integer"
        },
        "price": {
            "title": "Price",
            "type": "number"
        },
        "position": {
            "items": {
                "$ref": "#/$defs/Point"
            },
            "title": "Position",
            "type": "array"
        }
    },
    "required": [
        "id",
        "name",
        "description",
        "number",
        "price",
        "position"
    ],
    "title": "Item",
    "type": "object"
}