The LinkedIn Insight Tag is a lightweight JavaScript tag that powers conversion tracking, website audiences, and website demographics for LinkedIn ad campaigns.
Here is the step-by-step method to install the same.
1) Visit your LinkedIn Ad Account.
https://www.linkedin.com/campaignmanager/accounts
2) In the top navigation menu, click Account Assets -> Insights Tag
4) Click ' I will use a tag manager'. Select ' Google Tag Manager'. Copy-paste your property id in Google Tag Manager.