É possível recuperar todos os webhooks configurados pelo usuário da apikey através do endpoint api/Webhooks:

curl --request GET \
  --url https://api-cerberus-kong.socialminer.tech/api/Webhooks \
  --header 'apikey: {APIKEY}' \
  --header 'version: 4.0'

Caso hajam webhooks cadastrados, os mesmos são retornados numa lista conforme abaixo com o http status 200:

{
	"webhooks": [
		{
			"id": "f2056e5f-46b5-4d91-9a9a-54bb37a436c6",
			"phone": "123606713995007",
			"phone_id": "123606713995007",
			"meta_version":"LASTEST",
			"endpoint": "https://webhook.site/1d2befb1-c201-41e9-be6d-53677ca53bc7",
			"create_date": "2023-03-28T13:24:30.961Z",
			"update_date": "2023-03-28T13:24:30.961Z",
			"headers": {
				"additionalProp1": "5511964557557",
				"additionalProp2": "teste123",
				"additionalProp3": "string"

            }
}
	],
	"success": true
}