The sole responsibility of this world subsystem class is to host the default instance of [FMassEntityManager](API\Runtime\MassEntity\FMassEntityManager) for a given UWorld.
UCLASS ()
class UMassEntitySubsystem : public UMassSubsystemBase
Remarks
The sole responsibility of this world subsystem class is to host the default instance of FMassEntityManager for a given UWorld. All the gameplay-related use cases of Mass (found in MassGameplay and related plugins) use this by default.