getConversionData.m

TSTapstream *tracker = [TSTapstream instance];

// Call getConversionData to get the user's timeline history
[tracker getConversionData:^(NSData *jsonInfo) {
    if(jsonInfo == nil)
    {
        // No conversion data available
    }
    else
    {
        NSError *error;
        NSDictionary *json = [NSJSONSerialization JSONObjectWithData:jsonInfo options:kNilOptions error:&error];
        if(!json || error)
        {
            // No luck parsing the JSON
        }
        else
        {
            NSArray* hits = [json objectForKey:@"hits"];
            
            if(!hits || [hits count] == 0)
            {
                // No hits in timeline
            }
            else
            {
                // Hit exists in timeline
                NSDictionary* hit = [hits objectAtIndex:0]; // Grab the oldest hit
                if(!hit)
                {
                    // Couldn't get any hits
                }
                else
                {
                    NSString* slug = [hit objectForKey:@"tracker"];
                    //Do something with the slug...
                }
            }
        }
    }
}];