Version control of JSON data?

Question

JSON

So far, a simple scheme comes to mind:
do a deep scan of the object, look for changes and write them to a similar object, but without keys, the values ​​for which have not changed. All this can be stored, for example, in PostgreSQL (would it be better to store everything as a key-value, the same jsonb in Postgresql, and not as a string - then a non-relational database would be better?). But all this (search for differences, commits, data merging) will have to be implemented manually.
Are there ready made solutions?