Service for getting User info

Hello,

We are developing a spring rest gateway for calling Camunda features(using the community library client-tasklist, client-operate, spring-zeebe) and i don’t find anything to get User info.
When we recover a task or when we want to affect a user to one task we have its id, example in a Task recovered : “assignee”: “fc559461-f8ed-452e-bb15-7e752eb464d7”

How can we, through a spring boot app, recover user info (name etc.) with its id ?

Many thanks for your help !