Data Serialization Template

Hi there,

Looking for a template/sample containing the following:
a) Basic slot save/load system (backend, frontend)
b) Super basic inventory tied with the above
c) Super basic player attribute system

Something really simple I could extend, does not need to be network replicated, I am not interested in GAS or Lyra or any other framework which it would take longer to learn+modify than build my own solution ground-up. Blueprint based.

Thank you in advance!