模拟天猫商品详情的Python API实现，返回符合风格的JSON数据

json
{
    "productId": "123456",
    "productName": "天猫精灵X1智能音箱",
    "price": {
        "originalPrice": 299.0,
        "currentPrice": 199.0,
        "discountInfo": "5.1折"
    },
    "stock": 100,
    "description": "\n    天猫精灵X1智能音箱，支持语音交互、智能家居控制、音乐播放等功能。\n    采用高品质音频芯片，360度环绕立体声，带给你沉浸式的音乐体验。\n    支持蓝牙、Wi-Fi连接，可与手机、平板等设备无缝连接。\n    ",
    "images": [
        "https://example.com/images/product/123456/main.jpg",
        "https://example.com/images/product/123456/detail1.jpg",
        "https://example.com/images/product/123456/detail2.jpg"
    ],
    "specifications": {
        "品牌": "天猫",
        "型号": "X1",
        "颜色": "黑色",
        "尺寸": "150mm x 100mm x 100mm",
        "重量": "500g",
        "材质": "塑料"
    },
    "reviews": [
        {
            "userId": "user123",
            "username": "张三",
            "rating": 5,
            "comment": "音质非常好，语音识别准确，非常满意！",
            "time": "2026-03-01 10:00:00"
        },
        {
            "userId": "user456",
            "username": "李四",
            "rating": 4,
            "comment": "外观时尚，功能齐全，性价比很高。",
            "time": "2026-03-02 14:00:00"
        }
    ]
}