Dynamics 365 Portal - Filter Entity List Records

Hi,

I want to filter the Parent entity records based on child entity records and logged in user.

Example: Parent Entity(Account) - Child Entity(Contact).

Portal user must be a contact in CRM.

'Contact A' logged in to the portal and created a account(Account 1) record and associated two contact(Contact B and Contact C) records for that account

Whenever the Contact B is log in to the portal, he should be able to see Account 1 in his list of account records.

Appreciate any quick suggestion!

Thanks,

Nandhini