curl --request POST \
  --url https://staging.api.commercengine.io/api/v1/{store_id}/storefront/fulfillment/serviceability \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "delivery_pincode": "<string>",
  "cart_id": "<string>",
  "fulfillment_type": "delivery"
}
'

{
  "message": "<string>",
  "success": true,
  "content": {
    "is_serviceable": true,
    "unserviceable_items": [
      {
        "product_id": "<string>",
        "product_name": "<string>",
        "product_image_url": "<string>",
        "variant_id": "<string>",
        "variant_name": "<string>",
        "unserviceable_quantity": 123,
        "max_available_quantity": 123
      }
    ]
  }
}