curl --request GET \
  --url https://api.usehandled.io/api/v1/ipaas/unified_cache/returns/{id} \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "order_id": "<string>",
  "status": "<string>",
  "reason": "<string>",
  "line_items": [
    {
      "product_id": "<string>",
      "sku": "<string>",
      "quantity": 123,
      "reason": "<string>"
    }
  ],
  "tracking_number": "<string>",
  "carrier": "<string>",
  "refund_amount": 123,
  "currency": "<string>",
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "cached_at": "2023-11-07T05:31:56Z"
}