curl "https://api.scanova.io/qr-assets/design-template/?resource_type=qr_category&category_id=3" \
  -H "Authorization: 401f7ac837da42b97f613d789819ff93537bee6a"

{
  "count": 1,
  "next": null,
  "previous": null,
  "results": [
    {
      "id": 9,
      "name": "Blue Gradient",
      "resource_type": "qr_category",
      "category": 3,
      "design_info": { "bg": "#0033ff" },
      "gradient_type": "linear",
      "color_palette": "[\"#000\",\"#fff\"]",
      "font_styles": null,
      "is_template": true,
      "info": null,
      "template_id": "abc123"
    }
  ]
}