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#import <Socialize-iOS/Socialize.h>

// Allocate memory for the instance
Socialize* socialize = [[Socialize alloc] initWithDelegate:self];

// invoke the call (the latitude and the longitude can be nil)
[socialize viewEntity:entity longitude:nil latitude:nil];

// creating a view would invoke this callback and it would have an element of type id<SocializeView>
-(void)service:(SocializeService*)service didCreate:(id<SocializeObject>)object{
    if ([object conformsToProtocol:@protocol(SocializeView)]){
        // do your magic/logic here
    }
}

//in case of error
-(void)service:(SocializeService*)service didFail:(NSError*)error{

}