Thanks David,
I am also doing that, from Enterprise Portal WAB, I created a Feature Layer using "Add Item --> From the Web", and I am testing it. Also I enabled Editor tracking in ArcCatalog, and when I digitize a record I get the value "Esri_Anonimous" in the fields Created_user and Last_Editor_User.
Any recommendation to get the User ID of the editor in these fields?
Thanks