createEntity.m

SocializeEntity *entity = [[[SocializeEntity alloc] init] autorelease];
entity.key = @"myKey";
entity.name = @"My Name";
entity.meta = @"some meta data about this entity";

[socialize createEntity:entity];

-(void)service:(SocializeService*)service didFail:(NSError*)error{
    NSLog(@"%@", error);
}

//if the delete is successful
-(void)service:(SocializeService*)service didCreate:(id<SocializeObject>)object{
    NSLog(@"entity created");
}