Hello! I have been attempting to find documentation of how the various mentioned rate limits work (as to find out what kinds of operations are inherently rate limited), and have so far not been able to find anything terribly useful :(. (I was asked a while ago to build a service to help undocumented people receive updates on immigration raids, and we all agreed that Signal would be an interesting platform for this, but I couldn't figure out if it was actually possible to send bulk. I figure I should finally just ask ;P.) In particular, I'm curious if it is possible to send messages to hundreds, if not thousands, of users at once.