数组包含按级别和键和值的数组和字典，例如。 0级

Question

下面是我的包含字典和数组的数组，我想在其中插入级别键，例如。电子产品包含0级，笔记本电脑包含1级，游戏笔记本电脑包含2级，

    {
    ClassCodes =         (
                    {
            D = Cameras;
            I = 219;
        },
                    {
            ClassCodes =                 (
                                    {
                    D = "Gaming Laptops";
                    I = 265;
                }
            );
            D = Laptops;
            I = 220;
        }
    );
    D = Electronics;
    I = 218;
},
    {
    ClassCodes =         (
                    {
            D = "Grocery & Wine";
            I = 251;
        }
    );
    D = "Food & Grocery";
    I = 221;
},
    {
    ClassCodes =         (
                    {
            D = "Lark & Ro";
            I = 253;
        },
                    {
            D = Tops;
            I = 302;
        }
    );
    D = "Clothing, Shoes & Jewelry";
    I = 232;
},
    {
    D = Handmade;
    I = 234;
},
    {
    D = "Fire TV";
    I = 239;
},
    {
    ClassCodes =         (
                    {
            D = "Echo Dot";
            I = 257;
        }
    );
    D = "Echo & Alexa";
    I = 241;
},
    {
    ClassCodes =         (
                    {
            ClassCodes =                 (
                                    {
                    D = "Audio Books";
                    I = 248;
                },
                                    {
                    D = "Kindle Books";
                    I = 249;
                },
                                    {
                    D = Novels;
                    I = 258;
                },
                                    {
                    D = Dictionary;
                    I = 260;
                }
            );
            D = "Books & Audible";
            I = 17;
        }
    );
    D = "ABC Class Code";
    I = 243;
},
    {
    ClassCodes =         (
                    {
            D = "Movies ,Games, Audio";
            I = 38;
        }
    );
    D = "Vehicle Charges";
    I = 244;
},
    {
    D = Watches;
    I = 263;
}

我想在每个级别添加键，例如。电子设备包含级别0，笔记本电脑包含级别1，游戏笔记本电脑包含级别2， 我在这里停留了两天，请帮忙找到合适的解决方案。