Add identification tracker

Hi,
I am trying to identify contacts inside of HubSpot Custom Behvarioal Events - the stanrad way HS does it is via form submission. Unfortunately I can’t make 500.000 contacts fill out a form, so what I am trying to do is triger an API identifier per this source on my logins.
As my website is not a HS website, nor is my login page a form, I am trying to trigger it via this code through GTM.

"if (window.USER && window.USER.EMAIL) {
 var _hsq = window._hsq = window._hsq || [];
 _hsq.push(["identify",{
 email: window.USER.EMAIL
 }]);
}"

I am having issues how to use GTM to deploy this trigger - should I add this JS to the already existing HS tracking code, or any other method?

Hi, @FSimin :waving_hand: Interesting question. My search didn’t yield a quick solution. Can you provide any additional details to the community? Occasionally, the community doesn’t know, but sometimes they just need further information.

Best,

Jaycee