{
  "batch_id": "catalog-2026-10-05-001",
  "currency": "RUB",
  "warehouse": "main",
  "items": [
    {
      "external_id": "product-1001",
      "sku": "RB-1001",
      "name": "Тестовая товарная позиция",
      "price": 12990.00,
      "stock": 24,
      "attributes": {
        "brand": "Example",
        "category": "tools"
      }
    }
  ]
}