Hi All, I'm a bit new to SuperTokens and am designing out a flow for a project that may use ST in it, but had a question. In general, I will probably want to use a self-hosted solution, but the catch is that when a user rigisters, or login, then I want the ST backend to send a message to another server that I will have running as well. Is something like this possible, to have the ST backend perform an additional step? Is there some ST extension SDK or something?