curl --request POST \
  --url https://api.example.com/admin/notify-template/test \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "languageID": 123,
  "notifyTemplateID": 123,
  "isHTMLEmail": true,
  "isSMS": true,
  "isPushNotification": true,
  "isPlainTextEmail": true,
  "sendToIserIDs": [
    123
  ],
  "concatID": 123,
  "parentConcatID": 123,
  "ismID": 123,
  "interactingIserCode": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "displayModeID": 123
}
'

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