SP List JSON Body Configure Layout – how to add Modified (date/time)

I am configuring the display of the body using JSON of a SP List with a number of single line of text fields .

Now i want to make visible the Modified (read-only Date Time) field which I added as a column to the list (so Modified is included in list view settings (display is enabled))

  1. I do not see the Modified in Edit Columns ? how can it be added ?

  2. I entered “Modified” in body / JSON but it not visible

    “displayname”: “Entry”,
    “fields”: (
    I prefer a way in JSOn (if not then I need to use Powerapps)
    Any ideas welcome !