curl --request POST \
  --url https://api.example.com/iser/search-isers \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "editionID": null,
  "countryID": null,
  "searchText": null,
  "page": 123,
  "pageSize": 123
}
'

{
  "success": true,
  "data": "<unknown>"
}