1. Log out and log in on web. Ensure (using Redux in Developer Tools) that new olm accounts are dispatched in redux.
2. Using mariadb console set `signed_identity_keys` field in cookies table to NULL for the cookie associated with currently logged-in user on you r browser.
3. Reload web app. Using mariadb console ensure that `signed_identity_keys` field in cookies table to NULL for the cookie associated with currently logged-in user on you r browser is set to a proper JSON again.
Steps above ensure that already existing functionality relying on olm data wasn't broken by current changes.