What does a great comp plan look like for a digital agency sales team?

I'd love any insight regarding how you've seen digital agency sales comp plans structured. I'm in a digital agency startup where our product is influencers and we sell promotions created by these influencers on social platforms. Unlike other digital media/agencies that buy/sell ad inventory (lower overhead), we have a hefty fixed cost for our product. We aren't a SaaS either. I'd love to hear any best practices and comp terms/rates you've seen successful when structuring a sales plan for such a company. Thanks!