curl --request GET \
  --url https://staging-api.getpartna.com/v4/user/webhook \
  --header 'x-api-key: <api-key>' \
  --header 'x-api-user: <api-key>'

{
  "data": {
    "url": "https://webhook.site/665cf7e3-ea0c-494f-9dbb-cc0a825dd6da"
  },
  "message": "success"
}