You may use webhooks to receive notifications, such as users being created and updated. Notifications are grouped into topics that can be subscribed to.

You can create multiple webhooks that can listen for the notifications. When you add multiple webhooks you need to use api_application_key param for every request to show which key you are using for the webhooks.

Mobilize allows users to create and update multiple items at once for example: upload an excel of users or upload users' email list.
As a result of that, we created the bulk notification object. This object allows us to update you about all the items that have been created/changed through notification objects, for more information please review: bulk notification object and notification object topics.