Can't retrieve a related parentid when overriding standard actions with a lightning components

The url passed in the action overriding is base64 and url encoded.

Here i've detailed a process to get the value. You just need to do the opposite and then you'll have a json like this:

{"type":"standard__objectPage","attributes":{"objectApiName":"MyObject__c","actionName":"list"},"state":{"filterName":"Recent"}}

https://trailhead.salesforce.com/trailblazer-community/feed/0D54S00000FY0qZSAT