Retrieve variant detail

curl --request GET \
  --url https://services.commercengine.dev/api/v1/x2yh61zw4k/storefront/catalog/products/{product_id}/variants/{variant_id} \
  --header 'Authorization: Bearer <token>'

{
  "message": "Products retrieved successfully.",
  "success": true,
  "content": {
    "variant": {
      "id": "<string>",
      "name": "<string>",
      "short_description": "<string>",
      "description": "<string>",
      "stock_available": true,
      "associated_options": {},
      "metadata": [
        {
          "key": "<string>",
          "value": "<string>"
        }
      ],
      "sku": "<string>",
      "pricing": {
        "currency": "<string>",
        "tax_region": "<string>",
        "tax_type": "GST",
        "tax_rate": 123,
        "price_including_tax": false,
        "listing_price": 123,
        "selling_price": 123,
        "min_order_quantity": 123,
        "max_order_quantity": 123
      },
      "images": [
        {
          "title": "<string>",
          "alternate_text": "<string>",
          "sort_order": 123,
          "url_tiny": "<string>",
          "url_thumbnail": "<string>",
          "url_standard": "<string>",
          "url_zoom": "<string>"
        }
      ],
      "shipping": {
        "is_free_shipping": false,
        "is_fixed_cost_shipping": false,
        "fixed_cost_shipping_price": 123,
        "shipping_price_including_tax": true,
        "availability_description": "<string>",
        "ships_internationally": true,
        "mid_code": "<string>",
        "country_of_origin": "India",
        "tax_region": "<string>",
        "tax_type": "<string>",
        "tax_rate": 123
      },
      "packaging": {
        "pack_width": 123,
        "pack_height": 123,
        "pack_length": 123,
        "pack_dry_weight": 123,
        "calculated_weight": 123,
        "units_per_pack": 123,
        "volume_of_packsize": 123,
        "vertical_rotation": true,
        "shipper_width": 123,
        "shipper_height": 123,
        "shipper_length": 123,
        "shipper_dry_weight": 123,
        "units_per_shipper": 123
      },
      "promotion": [
        {
          "type": "discount",
          "details": {
            "discount_type": "percent",
            "discount_percent": 10,
            "discount_amount": 150.65,
            "max_amount": 2500
          }
        }
      ],
      "subscription": [
        {
          "subscription_plan": "<string>",
          "subscription_price": 123,
          "billing_interval": 123,
          "billing_frequency": "monthly",
          "billing_limit": 123,
          "fulfill_separately": false,
          "order_interval": 123,
          "order_frequency": "monthly",
          "order_limit": 123,
          "quantity": 123,
          "billing_trial_days": 123
        }
      ],
      "seo": {
        "meta_title": "<string>",
        "meta_description": "<string>",
        "meta_keywords": [
          "<string>"
        ],
        "slug": "<string>"
      }
    }
  }
}