curl --request GET \
  --url https://api.e-invoice.be/api/lookup/participants

{
  "total_count": 123,
  "used_count": 123,
  "query_terms": "<string>",
  "search_date": "<string>",
  "participants": [
    {
      "peppol_id": "<string>",
      "peppol_scheme": "<string>",
      "entities": [
        {
          "name": "<string>",
          "country_code": "<string>",
          "website": "<string>",
          "geo_info": "<string>",
          "additional_info": "<string>",
          "registration_date": "<string>",
          "identifiers": [
            {
              "scheme": "<string>",
              "value": "<string>"
            }
          ]
        }
      ],
      "document_types": [
        {
          "scheme": "<string>",
          "value": "<string>"
        }
      ]
    }
  ]
}