I am wondering if there is a way to determine the user entity type (SPPrincipalType) in a Nintex workflow. If somebody could help me I would greatly appreciate it.
Up to now I could not find a solution. Some sites I looked into: http://blog.bonzai-intranet.com/analysthq/2011/01/how-to-identify-if-sharepoint-person-or-group-fiel...
In the Nintex Forms People Control under Advanced (see the attachment) I could find out that there you can include the user entities like "User", "Security Group", "SharePoint Group".
PrincipalType info is eg provided by Users REST API, so you could be able to get it with web request action.