curl --request GET \
  --url https://api.contazen.ro/v1/invoice-series \
  --header 'Authorization: Bearer <token>'

{
  "success": true,
  "data": {
    "object": "list",
    "data": [
      {
        "id": "<string>",
        "object": "invoice_series",
        "name": "<string>",
        "document_type": "fiscal",
        "description": "<string>",
        "start_number": 123,
        "next_number": 123,
        "format": "FACT-{year}-{number}",
        "is_primary": true,
        "is_used": true,
        "year": 123,
        "created_at": 123
      }
    ],
    "total": 123
  },
  "meta": {
    "version": "v1",
    "request_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "response_time": "23.45ms"
  }
}