Persist content of dash-ag-grid

Hi team,

 I just set up a dash-ag-grid page, with side-bars(filter and pivot), and group data as content. However, I would like the user can keep their content in the session, so we set up a callback to get the property of dashaggrid.

However, I see when I apply filter in sidebar,or group expand/collapse, the cashback will not be triggered.

Could I know which property I need to put as the input of the callback? Thanks.