...
public void Startup(NetworkService service) {
   Debug.Log("Uruchomienie menedżera magazynu...");

   _network = service;

   UpdateData(new Dictionary<string, int>()); 

   status = ManagerStatus.Started;
}

public void UpdateData(Dictionary<string, int> items) {
   _items = items;
}

public Dictionary<string, int> GetData() {   
   return _items;
}
...
