ACAccount getting user_id

gistfile1.txt

ACAccount *account=nil;
NSArray *accountsArray = [accountStore accountsWithAccountType:accountType];
if([accountsArray count]>0){
  account=[accountsArray objectAtIndex:0];
}
NSDictionary *tempDict = [[NSMutableDictionary alloc] initWithDictionary: 
[account dictionaryWithValuesForKeys:[NSArray arrayWithObject:@"properties"]]];

NSString *userId = [[tempDict objectForKey:@"properties"] objectForKey:@"user_id"];