Authenticate user on a flow with http request as the trigger

[harrydimi]

I am trying to create a flow that will allow my users to click on a button and "subscribe" themselves to the specific client - basically get added to a specific list -other flows take over from there.  As I see it I will need to provide two parameters to flow, client name and username. I have already found a way to pass the clientname as a parameter to the http request, my question is , is there a way to know who clicked the button and resolve their username/email?

[v-yuazh-msft]

Hi @harrydimi,

Could you please share a screenshot of the flow?

If your flow with trigger "Manually trigger a flow", you could get the user name or email who clicked the button refer to screenshot below:

Best regards,

Alice