I need to get the whole Redux state as a JSON file without payload or action from Redux DevTools, just the state.
If you're using React, and have React DevTools installed, there's another way to get the state from within Chrome:
Open React DevTools Components tab and select the top level "Provider":
Then go to the Console tab and paste this into the prompt: JSON.stringify($r.store.getState())
$r is the currently selected component in react devtools