{
    "$schema": "http://json-schema.org/draft-07/schema#",
    "definitions": {
        "PrimitiveShapes": {
            "enum": ["string", "f32", "f64", "u64", "i64", "bool", "null"]
        },
        "ShapePrimitive": {
            "type": "object",
            "additionalProperties": { "$ref": "#/definitions/PrimitiveShapes" }
        },
        "ShapePrimitiveType": {
            "anyOf": [
                { "$ref": "#/definitions/PrimitiveShapes" },
                { "$ref": "#/definitions/ShapePrimitive" }
            ]
        },
        "ShapeType": {
            "anyOf": [
                { "$ref": "#/definitions/PrimitiveShapes" },
                {
                    "type": "array",
                    "minItems": 1,
                    "maxItems": 1,
                    "items": { "$ref": "#/definitions/ShapePrimitiveType" }
                },
                { "$ref": "#/definitions/Shape" }
            ]
        },
        "Shape": {
            "type": "object",
            "additionalProperties": { "$ref": "#/definitions/ShapeType" }
        }
    },
    "type": "object",
    "additionalProperties": { "$ref": "#/definitions/ShapeType" }
}