How to get layer, marker and polygon data from a leaflet map?

Question

leaflet

Good afternoon.
Two questions on leaflet.
I have a JSON object with markers and polygons grouped by layers that I display on a map. I also use the "Leaflet.PM" plugin, which allows me to edit existing markers and polygons and add new ones. The question is how then to get the edited data in order to save it.
The second question is how to get the clicked marker? On click, I suppose to edit the text and the marker icon.