ReactiveCocoa Recommendations with CoreData

Question

So, I am creating an application that works strongly with the user API, I built all the basic data models in my application based on the returned API models, some of the functions change very regularly based on user interaction, and I tried to find a way to use ReactiveCocoa with the data Core to efficiently transfer changes from entities to my views in table cells and so on. I have all my models regularly displayed with JSON and updates, the only thing I can’t solve is the best way to use reactive cocoa with master data.

Hope someone can help me.