Remapping JSON keys to Core Data attributes using the userInfo dictionary of the attribute entity description as defined in the Core Data Model Editor

coredatajsonremap.m

entityUserInfo = [entity userInfo];
reKeyedValues = [[NSMutableDictionary alloc] initWithDictionary:jsonObject];
	
for (NSString *key in keyedValues){
	if ([entityUserInfo valueForKey:key] != nil){
		[reKeyedValues setValue:[keyedValues valueForKey:key] forKey:[entityUserInfo valueForKey:key]];
		// Remove the original key
		[reKeyedValues setValue:nil forKey:key];
	}
}
[managedObject setValuesForKeysWithDictionary:reKeyedValues];