curl --request POST \
  --url https://api.gameball.co/api/v4.0/integrations/coupons/automatic \
  --header 'Content-Type: application/json' \
  --header 'apikey: <api-key>' \
  --data '
{
  "customerId": "<string>",
  "cartId": "<string>",
  "email": "<string>",
  "mobile": "<string>",
  "totalPrice": 123,
  "totalShipping": 123,
  "lineItems": [
    {
      "productId": "<string>",
      "quantity": 123,
      "price": 123,
      "sku": "<string>",
      "tags": [
        "<string>"
      ],
      "category": [
        "<string>"
      ],
      "weight": 123,
      "vendor": "<string>",
      "collection": [
        "<string>"
      ],
      "title": "<string>",
      "taxes": 123,
      "discount": 123,
      "extra": {}
    }
  ],
  "merchant": {
    "uniqueId": "<string>",
    "name": "<string>",
    "branch": {
      "uniqueId": "<string>",
      "name": "<string>"
    }
  }
}
'

{
  "isApplied": true,
  "couponName": "<string>",
  "discountAmount": 123,
  "discountType": "shipping",
  "discountedItems": [
    {
      "productId": "<string>",
      "quantity": 123,
      "discount": 123,
      "price": 123
    }
  ]
}