Hello @Matteo Traina,
welcome to this moderated Azure community forum.
I tried this myself and got it working.
Please check this blog post for all details.
Notice the access management for both Azure Data Explorer and the Log analytics Workspace. This took me some time to comprehend.
If the response helped, do "Accept Answer". If it doesn't work, please let us know the progress. All community members with similar issues will benefit by doing so. Your contribution is highly appreciated.