NSMutableArray * objDateTimeValues = [[NSMutableArray alloc] initWithObjects:theDate, theTime, nil];

NSDictionary * dictObjDateTime = [NSDictionary dictionaryWithObjects:objDateTimeValues forKeys:objDateTime];

NSString * dateAndTime = [NSString stringWithFormat:@"%@, %@", [dictObjDateTime objectForKey:@"date"], [dictObjDateTime objectForKey:@"time"]];


// Step 1.2 => Create a dictionary for the other values
NSMutableArray * objJsonConfRecv = [[NSMutableArray alloc] initWithObjects:@"datetime", @"a", @"b", @"c", @"d", nil];

NSMutableArray * objJsonConfRecvValues = [[NSMutableArray alloc] initWithObjects:dateAndTime, test1, test2, test3, test4, nil];

NSDictionary * dictObjJsonConfRecv = [NSDictionary dictionaryWithObjects:objJsonConfRecvValues forKeys:objJsonConfRecv];


if ([NSJSONSerialization isValidJSONObject:dictObjJsonConfRecv])