curl --request GET \
  --url https://app.sure.am/api/v1/budget_categories \
  --header 'X-Api-Key: <api-key>'

{
  "budget_categories": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "budget_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "currency": "<string>",
      "subcategory": true,
      "inherits_parent_budget": true,
      "category": {
        "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "name": "<string>",
        "color": "<string>",
        "lucide_icon": "<string>",
        "parent_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
      },
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z",
      "budgeted_spending": "<string>",
      "budgeted_spending_cents": 123,
      "display_budgeted_spending": "<string>",
      "display_budgeted_spending_cents": 123
    }
  ],
  "pagination": {
    "page": 2,
    "per_page": 2,
    "total_count": 1,
    "total_pages": 1
  }
}