fdEvent key in localStorage

[aalibaabaa]

Hello Gatsby community,

in my latest Gatsby project for a customer I figured out, that there is a localStorage key set, that is called "fdEvent".
The value looks like this {"payload":{"id":123456,"scope":"session"},"timestamp":1627378980390}

Does anybody know where this key comes from? I' m sure the key wasn't set a view month ago, when I published the project. Maybe it was introduced by a Gatsby update. But of course it could also come from an other source than Gatsby.

My current version is 3.9.1

The main thing about this issue is, that the customer has strict rules concerning cookie consents. They want me to describe the function of this fdEvent key.

Can someone help me?

Thank you very much in advance!

[aalibaabaa]

I close this question, since I finally found cause. The "fdEvent" is set by a third-party vendor.
Sorry for any inconvenience.