[keycloak-user] Authorization resource SPI

Hi, is it possible to implement a resource SPI? The idea would be to let an external database to manage Keycloak resources. I currently manage my resources in two databases: Keycloak for properties such as owner and visibility; and a regular Mongo for the rest of properties relative to my business (think location, sensor values etc.). However, having resource split over two databases becomes more and more awkward. I have to keep them always in sync, for example creating and deleting the resource in both location. It becomes even more complicated when something fails on one database (such as 409 Conflict): I have to undo what was done on the other DB. So it would be best to avoid duplication of data and manage everything in the Mongo external database. Is it possible? Cheers