Event serialization is not supported by processing rules. In the Mobile SDK, you must use a special syntax in the context data parameter to set serialized events directly on the server call.
[contextData setObject:@"eventN:serial number" forKey:@"&&events"];For example:
//create a context data dictionary
NSMutableDictionary *contextData = [NSMutableDictionary dictionary];
// add events
[contextData setObject:@"event1:12341234" forKey:@"&&events"];
// send the tracking call - use either a trackAction or TrackState call.
// trackAction example:
[ADBMobile trackAction:@"action" data:contextData];
// trackState example:
[ADBMobile trackState:@"State Name" data:contextData];