{
    "shapes": [
        {
            "type": "rectangle",
            "width": 5,
            "height": 10,
            "color": "red"
        },
        {
            "type": "circle",
            "radius": 7,
            "color": "blue"
        },
        {
            "type": "square",
            "side": 4,
            "color": "green"
        }
    ]
}