Well, the custom field I linked to the other day actually stores data as json, so you should be able to do the same.
I mean this one: Revert button not reverting unsaved changes in custom plugin - #8 by isaac
Well, the custom field I linked to the other day actually stores data as json, so you should be able to do the same.
I mean this one: Revert button not reverting unsaved changes in custom plugin - #8 by isaac