Web Action returns HTTP 202 - how to fetch result? #5587

I have a web action, that does not get finished within the required amount of time and returns

HTTP 202 with body

{
  "code": "1mIX3XH884oIG88FDb1rmsBI9pM5RUsV",
  "error": "Response not yet ready."
}

and headers

< x-openwhisk-activation-id: 631a52ba97464db59a52ba97464db5a7
< x-request-id: 1mIX3XH884oIG88FDb1rmsBI9pM5RUsV

now I understand, that the result will be ready some time after.

I could however, not find out to fetch the result?! The web action is public (requiring no authentication), hence I assume the
result should be fetchable public too, but I couldn't find a way to do so?!