curl --request POST \
  --url https://v2.easystreetoffers.com/api/v2/wh \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "url": "https://example.com/webhook"
}
'

{
  "error": 123,
  "message": "<string>"
}