What is the best way to mark a post as read from the API?

Hello! I'm the developer of Summit, one of the Lemmy apps.

I want to be able to mark a post as read using an API call.

I understand that fetching the post itself using the account JWT will mark the post as read for that account, however this also fetches a lot of data.

Trying to be as server friendly as possible, what is the least resource intensive way to mark a post as read and nothing else?

Also if there is a better place to ask this, please let me know.