Convert https://easylist.to/ to Untangle Json format.
Download Powershell file and run.
The user how runs the Powershell file need to have write access to the file system.
If all goes well it will create a "ADImport.json" file in the same directory or the directory you started the script from.
Import that Json file in to your Ad filter "User Defined Filters" http://IPOFYOURUNTANGLE/admin/index.do#apps/1/ad-blocker/ad-filters
Have Fun!