Theme Asset Get

A catch-all endpoint for tracking read states and other things that are not critical to the functioning of the platform. This endpoint is fire and forget and does not return any meaningful data. It is designed to be used with the `navigator.sendBeacon` API in browsers to mark things such as how far down a thread a member has read, or whether or not a Library Page has been visited recently. It may queue the work for later processing and is not guaranteed to be processed immediately or at all.