curl --request GET \
  --url 'https://api.stateset.com/api/v1/ar/dunning/due' \
  --header 'Authorization: Bearer YOUR_API_KEY'

{
  "invoices": [
    {
      "balance_due": "string",
      "customer_id": "string",
      "due_date": "string",
      "id": "string",
      "invoice_number": "string",
      "status": "string",
      "total": "string"
    }
  ],
  "total": 1
}