google ads attribution

We want to be able to track revenue attribution on ticket sales. When an ad is clicked on to our main site, there’s a unique Google click id associated with the ad. It’s called a gclid. The string always has “gclid=“ if it’s associated with an ad. We want to be able to store this id in the session on our site so that it can be passed to spicerack and we can see if people who click an ad end up buying a ticket and how much they spent.