curl --request POST \
  --url https://api.exa.ai/websets/v0/webhooks \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '{
  "events": [
    "webset.created"
  ],
  "url": "<string>",
  "metadata": {}
}'

{
  "id": "<string>",
  "object": "webhook",
  "status": "active",
  "events": [
    "webset.created"
  ],
  "url": "<string>",
  "secret": "<string>",
  "metadata": {},
  "createdAt": "2023-11-07T05:31:56Z",
  "updatedAt": "2023-11-07T05:31:56Z"
}