session.m

-(void)realAuthenticate {
    NSURLRequest *request = [self getURLRequest];
    
    AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request
        success:^( NSURLRequest *request , NSHTTPURLResponse *response , id JSON ) {
            NSString *domain = [[(NSArray *)[JSON objectForKey:@"sites"] lastObject] objectForKey:@"domain"];
            Portfolio *portfolio = [[Portfolio alloc] init];
            portfolio.domain = domain;
            self.portfolio = portfolio;
            [self finishAuth:YES];
        }
        failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON) {
            [self finishAuth:NO];
        }];
    [operation start];
}