The GestureInfo struct contains information about what the hand is doing.
For more information about the different gestures please look at https://developer.manomotion.com/supported-gestures/
Here are some examples of how you can access and use the gesture information.
You can access the gesture information from the HandInfos in ManoMotionManager like this: 
void Update()
{
    GestureInfo gestureInfo = ManoMotionManager.Instance.HandInfos[0].gestureInfo;
}
ManoGestureContinuous
This value is set when a gesture is performed over several frames.

[SerializeField] TMP_Text continuousGestureText;
 
void ContinuousGestureExample(GestureInfo gestureInfo)
{
    ManoGestureContinuous continuousGesture = gestureInfo.manoGestureContinuous;
    continuousGestureText.text = continuousGesture.ToString();
}
ManoGestureTrigger
This value is set the first frame a gesture is performed.

[SerializeField] GameObject toggleObject;
 
void GestureTriggerExample(GestureInfo gestureInfo)
{
    ManoGestureTrigger gestureTrigger = gestureInfo.manoGestureTrigger;
 
    if (gestureTrigger == ManoGestureTrigger.CLICK)
    {
        bool active = toggleObject.activeSelf;
        toggleObject.SetActive(!active);
    }
}
HandSide
Which side of the hand is facing the camera.

[SerializeField] MeshRenderer handSideRenderer;
[SerializeField] Material palmMaterial, backMaterial;
 
void HandSideExample(GestureInfo gestureInfo)
{
    HandSide handSide = gestureInfo.handSide;
 
    if (handSide == HandSide.Palmside)
    {
        handSideRenderer.material = palmMaterial;
    }
    else
    {
        handSideRenderer.material = backMaterial;
    }
}