Log name of user who triggers a Power Automate

Does anyone know of a way to log the name of the user who triggers a Power Automate? I have a Power Automate that updates file properties of a document in a SharePoint document library but when a user runs the Power Automate, it doesn't change the name in the 'Modified' column to that user. 

I'm happy to add a new column called 'Power Automate last ran by' or something like that, but how can I then populate this with the name of the user who triggers the Power Automate?