Latest Nuitrack plugin with Unreal Engine 5.5 support is already on Fab - https://bit.ly/nuitrack-unreal-engine-5
Now Nuitrack a native support for MetaHumans - they could be animated without any code with a dedicated blueprint just by replacing with your own meshes
https://dev.epicgames.com/community/learning/tutorials/KPkD/epic-games-store-fab-how-real-time-animate-metahuman-in-unreal-engine-nuitrack