curl --request POST \
  --url https://api.example.com/{proxy_path_prefix}/product_availability_checks \
  --header 'Content-Type: application/json' \
  --data '
{
  "product_ids": [
    123,
    456
  ],
  "rental_start": "2025-02-25T09:00:00Z",
  "rental_end": "2025-02-28T17:00:00Z"
}
'

{
  "products": [
    {
      "shopify_id": 123,
      "title": "Product 1",
      "available_variants": [
        {
          "shopify_id": 1001,
          "title": "Variant 1"
        },
        {
          "shopify_id": 1002,
          "title": "Variant 2"
        }
      ]
    },
    {
      "shopify_id": 456,
      "title": "Product 2",
      "available_variants": []
    }
  ]
}