How to access unique trackID for human skeleton detections from `ObjectStamped` message?

[shruthiR-fauna]

Hi - thanks for providing the code and resources in this repo. I'm doing multiple human tracking with the ZED2 and using the sdk and zed-interfaces to access these data. I'm curious which field stores the individual's unique ID and whether that can be used to index the keypoints stored in the ObjectStamped message?