How to Set Special Price in Laravel?

Question

I have product data in cart like this.

{
    "data": [
        {
            "seller_id": 1,
            "seller_name": "DStore",
            "products": [
                {
                    "id": 113,
                    "item_id": 61,
                    "name": "Kecap BCA",
                    "stock": 2344,
                    "weight": 200,
                    "quantity": 1,
                    "price": 2000,
                    "disc": null,
                    "promo": null,
                    "final_price": 2000
                },
                {
                    "id": 43,
                    "item_id": 60,
                    "name": "Kembang Goyang",
                    "stock": 4,
                    "weight": 200,
                    "quantity": 1,
                    "price": 13000,
                    "disc": null,
                    "promo": null,
                    "final_price": 13000
                },
                {
                    "id": 1,
                    "item_id": 64,
                    "name": "Sabrina - Tahu Tuna",
                    "stock": 2993,
                    "weight": 50,
                    "quantity": 2,
                    "price": 7500,
                    "disc": 16,
                    "promo": 6300,
                    "final_price": 12600
                }
            ]
        }
    ],
    "message": "Success",
    "status": "200"
}

And I have special price data if the quantity of the product in the cart has exceeded the quantity of the product at the special price that has been set.

{
    "data": [
        {
            "product_id": 113,
            "from": 10, //min qty
            "to": 20, //max qty
            "price": 1800
        },
        {
            "product_id": 113,
            "from": 21, //min qty
            "to": 30, //max qty
            "price": 1500
        }
    ],
    "message": "Success",
    "status": "200"
}

How to check it and change the total price in the cart automatically? I'm still confused with the logic or schematic how to check it. Thanks