Setting context fields manually (such as utm_campaign, utm_source, gclid)
I'd like to know how to set context fields (such as utm_campaign, utm_source, gclid), which i have already parsed and stored in session cookies manually.
Is there a way to send them with analytics.identify or i should set this information somewhere else, like directly in context.campaign? In both cases, what's the syntax to do it?
Thanks in advance