curl --request PUT \
  --url https://api.hubapi.com/webhooks/2026-03/{appId}/settings \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "targetUrl": "<string>",
  "throttling": {
    "maxConcurrentRequests": 123
  }
}
'

{
  "createdAt": "2023-11-07T05:31:56Z",
  "targetUrl": "<string>",
  "throttling": {
    "maxConcurrentRequests": 123
  },
  "updatedAt": "2023-11-07T05:31:56Z"
}