SkeletonAnimator uses Unity AnimationClip events named after the event name.
All Unity AnimationClip events fire using a SendMessage call.
This works by having any MonoBehavior on the same GameObject have a method name the same as the AnimationClip event.
So if you have an event named "Blink", you can add a method to any script on the same GameObject like this:
void Blink ()
{
Debug.Log("Blink event was fired");
}