How do i get space key from spaceid in confluence server

I am Getting the Space id from the webhook payload created using the REST APIS given .Refer to this doc :-https://docs.atlassian.com/ConfluenceServer/rest/7.2.0/#api/webhooks-createWebhook

Webhook Payload :-

{
“timestamp”: 1650607676259,
“event”: “space_updated”,
“userKey”: “XXXXXXXXXXXXX”,
“space”: {
“id”: XXXXXX,
“creatorKey”: “XXXXXXXXXX”,
“creationDate”: 1648588938819,
“lastModifierKey”: “XXXXXXX”,
“modificationDate”: 1650607676259
}
}

Now to Get the other Information about the Space I need the space key . Using Rest APIs how can i get the space key and other informations about the space from spaceid.

I have created a webhook using this doc

https://docs.atlassian.com/ConfluenceServer/rest/7.2.0/#api/webhooks-createWebhook

This webhook is delivering this payload at the url i have given in the body while making the webhook and subscribed to space related events .

You can see the this kind of payload under this heading in the below doc

Event payloads
https://confluence.atlassian.com/confeap/managing-webhooks-1044798195.html

Now i need to get the other information about the space but all the apis in this doc

https://docs.atlassian.com/ConfluenceServer/rest/7.2.0/ require spaceKey rather than spaceid .I required some kind of Api to get the space key from space id because i am only getting the space id here rather than space key.