curl --request POST \
  --url https://api.example.com/api/sync/webhook/register \
  --header 'Content-Type: application/json' \
  --header 'X-Site-ID: <x-site-id>' \
  --header 'X-Sync-Secret: <x-sync-secret>' \
  --data '
{
  "url": "<string>",
  "events": [
    "<string>"
  ]
}
'

{
  "id": "<string>",
  "url": "<string>",
  "events": [
    "<string>"
  ],
  "created_at": "2023-11-07T05:31:56Z"
}