As far as my understanding of the soviet style democratic centralist systems goes (I suppose DemCent could be implemented in many ways, just like liberal electoralism can), every country has a supreme soviet which convenes some times a year to appoint, remove and review the progress of the presidium. The members of the presidium themselves have a strong distribution of powers amongst each other, and so a dictator type like Putin shouldn't really show up at all, and if he does, he should be removed by the supreme soviet. The supreme soviet itself was elected by lower level regional soviets, which were in turn elected by lower level soviets and so on until you had the fully local soviets, which were initially organizations the factory workers and soldiers during the revolution (so they predated even the USSR), and latter (after the 1936 constitution) became location based (so similar to the local councils in liberal systems).

I have heard compelling arguments that any new DemCent system should take ideas from ancient athenian democracy like sortition and direct democracy. I agree with them, but implementing such a system in reality would likely be challenging and require many preconditions to be met (such as having a highly educated population with good amounts of free time and no worries about war or imperialism).