curl --request GET \
  --url {protocol}://{host}/wp-json/cocart/v1/products/{product_id}/variations/{id}

{
  "id": 123,
  "date_created": "2023-11-07T05:31:56Z",
  "date_created_gmt": "2023-11-07T05:31:56Z",
  "date_modified": "2023-11-07T05:31:56Z",
  "date_modified_gmt": "2023-11-07T05:31:56Z",
  "description": "<string>",
  "permalink": "<string>",
  "sku": "<string>",
  "price": "<string>",
  "regular_price": "<string>",
  "sale_price": "<string>",
  "date_on_sale_from": "2023-11-07T05:31:56Z",
  "date_on_sale_from_gmt": "2023-11-07T05:31:56Z",
  "date_on_sale_to": "2023-11-07T05:31:56Z",
  "date_on_sale_to_gmt": "2023-11-07T05:31:56Z",
  "on_sale": true,
  "status": "<string>",
  "purchasable": true,
  "virtual": true,
  "downloadable": true,
  "downloads": [
    {
      "id": "<string>",
      "name": "<string>",
      "file": "<string>"
    }
  ],
  "download_limit": 123,
  "download_expiry": 123,
  "tax_status": "<string>",
  "tax_class": "<string>",
  "manage_stock": true,
  "stock_quantity": 123,
  "stock_status": "<string>",
  "backorders": "<string>",
  "backorders_allowed": true,
  "backordered": true,
  "weight": "<string>",
  "dimensions": {
    "length": "<string>",
    "width": "<string>",
    "height": "<string>"
  },
  "shipping_class": "<string>",
  "shipping_class_id": 123,
  "image": {
    "id": 123,
    "src": "<string>",
    "name": "<string>",
    "alt": "<string>"
  },
  "attributes": [
    {
      "id": 123,
      "name": "<string>",
      "option": "<string>"
    }
  ],
  "meta_data": [
    {
      "id": 123,
      "key": "<string>",
      "value": "<string>"
    }
  ],
  "links": {
    "self": [
      {
        "href": "<string>"
      }
    ],
    "collection": [
      {
        "href": "<string>"
      }
    ],
    "up": [
      {
        "href": "<string>"
      }
    ]
  }
}