Retrieve data from a cookie

Hey Community,

is there a straight forward way to retrieve data from a cookie thats being created by a javascript upon page load? The cookie gets set by a script from a third party tool I need for Referrals. I need to save this generated ID and store it for a later point in time.

I do know the exact name of the cookie and its data is stored as json like this

{"id":"b1e84eb6-85f4-40c1-abf8-324a4c512f02","created_at":"2024-07-30T10:31:20.119Z"}

Im stuck at this seemingly easy task 😄

Thanks for your help!