curl --request GET \
  --url https://api.example.com/system/inbound-webhook-subscriptions/{connection_id} \
  --header 'Authorization: Bearer <token>'

{
  "subscriptions": [
    {
      "id": "<string>",
      "connection_id": "<string>",
      "secret": "<string>",
      "events": [
        "<string>"
      ],
      "disabled": true,
      "external_service_id": "<string>",
      "verification_adapter_id": "<string>",
      "integration_name": "<string>"
    }
  ]
}