curl --request GET \
  --url https://{operatorDomain}/v1/admin/finance/supplier-invoices/{id}/attachments \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "<string>",
      "name": "<string>",
      "mimeType": "<string>",
      "storageKey": "<string>"
    }
  ]
}