How do I sue my landlord in small claims court (LLC without an agent name)?

My landlord in SF has not returned my security deposit, even though it’s been over a month since I left my previous apartment on Dec 18. All my communication with the LLC landlord was done through the property manager.

The landlord is an LLC company, whose agent name I don’t even know, nor is an agent name listed in the Secretary of State database. It just states the name of another corporation.

In order to sue an LLC in small claims court, I need the legal name of an agent to service the claim. Is it possible to sue an LLC without knowing the agent’s name? I know the mailing address of the LLC, though.