Best practice for core data model object save

I have a two entity "Person" and "Car" is coming from the web service. I need to store that in sqlite through core data. I want to know what is the best approach should i bind the save method with NSmanagedobject or write differently in utility or manager?

**Approach 1** 

@interface Person : NSManagedObject

@property (nonatomic, retain) NSString * title;

- (void) saveManagedObject:(NSDictionary*)response //Responsible for init the person object and save in context

@end

**Approach 2**

@interface CoreDataUtility : NSObject

- (void) saveManagedObject:(NSDictionary*)response //Responsible for create the person object and save in context

@end