diff --git a/apps/dav/lib/Events/CalendarObjectCreatedEvent.php b/apps/dav/lib/Events/CalendarObjectCreatedEvent.php
index 187ded2dcd4f9..15c139f8bd009 100644
--- a/apps/dav/lib/Events/CalendarObjectCreatedEvent.php
+++ b/apps/dav/lib/Events/CalendarObjectCreatedEvent.php
@@ -9,6 +9,7 @@
 namespace OCA\DAV\Events;
 
 use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IWebhookCompatibleEvent;
 
 /**
  * Class CalendarObjectCreatedEvent
@@ -16,7 +17,7 @@
  * @package OCA\DAV\Events
  * @since 20.0.0
  */
-class CalendarObjectCreatedEvent extends Event {
+class CalendarObjectCreatedEvent extends Event implements IWebhookCompatibleEvent {
 
 	/**
 	 * CalendarObjectCreatedEvent constructor.
@@ -67,4 +68,17 @@ public function getShares(): array {
 	public function getObjectData(): array {
 		return $this->objectData;
 	}
+
+	/**
+	 * @return array
+	 * @since 32.0.0
+	 */
+	public function getWebhookSerializable(): array {
+		return [
+			'calendarId' => $this->getCalendarId(),
+			'calendarData' => $this->getCalendarData(),
+			'shares' => $this->getShares(),
+			'objectData' => $this->getObjectData(),
+		];
+	}
 }
diff --git a/apps/dav/lib/Events/CalendarObjectDeletedEvent.php b/apps/dav/lib/Events/CalendarObjectDeletedEvent.php
index 9928080f99b2a..449be002a1b3a 100644
--- a/apps/dav/lib/Events/CalendarObjectDeletedEvent.php
+++ b/apps/dav/lib/Events/CalendarObjectDeletedEvent.php
@@ -9,6 +9,7 @@
 namespace OCA\DAV\Events;
 
 use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IWebhookCompatibleEvent;
 
 /**
  * Class CalendarObjectDeletedEvent
@@ -16,7 +17,7 @@
  * @package OCA\DAV\Events
  * @since 20.0.0
  */
-class CalendarObjectDeletedEvent extends Event {
+class CalendarObjectDeletedEvent extends Event implements IWebhookCompatibleEvent {
 
 	/**
 	 * CalendarObjectDeletedEvent constructor.
@@ -67,4 +68,17 @@ public function getShares(): array {
 	public function getObjectData(): array {
 		return $this->objectData;
 	}
+
+	/**
+	 * @return array
+	 * @since 32.0.0
+	 */
+	public function getWebhookSerializable(): array {
+		return [
+			'calendarId' => $this->getCalendarId(),
+			'calendarData' => $this->getCalendarData(),
+			'shares' => $this->getShares(),
+			'objectData' => $this->getObjectData(),
+		];
+	}
 }
diff --git a/apps/dav/lib/Events/CalendarObjectMovedEvent.php b/apps/dav/lib/Events/CalendarObjectMovedEvent.php
index 0b57919ddc9f3..0efd49d648f94 100644
--- a/apps/dav/lib/Events/CalendarObjectMovedEvent.php
+++ b/apps/dav/lib/Events/CalendarObjectMovedEvent.php
@@ -9,6 +9,7 @@
 namespace OCA\DAV\Events;
 
 use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IWebhookCompatibleEvent;
 
 /**
  * Class CalendarObjectMovedEvent
@@ -16,7 +17,7 @@
  * @package OCA\DAV\Events
  * @since 25.0.0
  */
-class CalendarObjectMovedEvent extends Event {
+class CalendarObjectMovedEvent extends Event implements IWebhookCompatibleEvent {
 	/**
 	 * @since 25.0.0
 	 */
@@ -87,4 +88,20 @@ public function getTargetShares(): array {
 	public function getObjectData(): array {
 		return $this->objectData;
 	}
+
+	/**
+	 * @return array
+	 * @since 32.0.0
+	 */
+	public function getWebhookSerializable(): array {
+		return [
+			'sourceCalendarId' => $this->getSourceCalendarId(),
+			'sourceCalendarData' => $this->getSourceCalendarData(),
+			'targetCalendarId' => $this->getTargetCalendarId(),
+			'targetCalendarData' => $this->getTargetCalendarData(),
+			'sourceShares' => $this->getSourceShares(),
+			'targetShares' => $this->getTargetShares(),
+			'objectData' => $this->getObjectData(),
+		];
+	}
 }
diff --git a/apps/dav/lib/Events/CalendarObjectMovedToTrashEvent.php b/apps/dav/lib/Events/CalendarObjectMovedToTrashEvent.php
index a26aca4ff2bfa..5030f3d5e2e98 100644
--- a/apps/dav/lib/Events/CalendarObjectMovedToTrashEvent.php
+++ b/apps/dav/lib/Events/CalendarObjectMovedToTrashEvent.php
@@ -9,11 +9,12 @@
 namespace OCA\DAV\Events;
 
 use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IWebhookCompatibleEvent;
 
 /**
  * @since 22.0.0
  */
-class CalendarObjectMovedToTrashEvent extends Event {
+class CalendarObjectMovedToTrashEvent extends Event implements IWebhookCompatibleEvent {
 
 	/**
 	 * @param int $calendarId
@@ -62,4 +63,17 @@ public function getShares(): array {
 	public function getObjectData(): array {
 		return $this->objectData;
 	}
+
+	/**
+	 * @return array
+	 * @since 32.0.0
+	 */
+	public function getWebhookSerializable(): array {
+		return [
+			'calendarId' => $this->getCalendarId(),
+			'calendarData' => $this->getCalendarData(),
+			'shares' => $this->getShares(),
+			'objectData' => $this->getObjectData(),
+		];
+	}
 }
diff --git a/apps/dav/lib/Events/CalendarObjectRestoredEvent.php b/apps/dav/lib/Events/CalendarObjectRestoredEvent.php
index 99d752de466ae..8940e0b5b0d3d 100644
--- a/apps/dav/lib/Events/CalendarObjectRestoredEvent.php
+++ b/apps/dav/lib/Events/CalendarObjectRestoredEvent.php
@@ -9,11 +9,12 @@
 namespace OCA\DAV\Events;
 
 use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IWebhookCompatibleEvent;
 
 /**
  * @since 22.0.0
  */
-class CalendarObjectRestoredEvent extends Event {
+class CalendarObjectRestoredEvent extends Event implements IWebhookCompatibleEvent {
 
 	/**
 	 * @param int $calendarId
@@ -62,4 +63,17 @@ public function getShares(): array {
 	public function getObjectData(): array {
 		return $this->objectData;
 	}
+
+	/**
+	 * @return array
+	 * @since 32.0.0
+	 */
+	public function getWebhookSerializable(): array {
+		return [
+			'calendarId' => $this->getCalendarId(),
+			'calendarData' => $this->getCalendarData(),
+			'shares' => $this->getShares(),
+			'objectData' => $this->getObjectData(),
+		];
+	}
 }
diff --git a/apps/dav/lib/Events/CalendarObjectUpdatedEvent.php b/apps/dav/lib/Events/CalendarObjectUpdatedEvent.php
index 8c4b843609d94..0447c5374254c 100644
--- a/apps/dav/lib/Events/CalendarObjectUpdatedEvent.php
+++ b/apps/dav/lib/Events/CalendarObjectUpdatedEvent.php
@@ -9,6 +9,7 @@
 namespace OCA\DAV\Events;
 
 use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IWebhookCompatibleEvent;
 
 /**
  * Class CalendarObjectUpdatedEvent
@@ -16,7 +17,7 @@
  * @package OCA\DAV\Events
  * @since 20.0.0
  */
-class CalendarObjectUpdatedEvent extends Event {
+class CalendarObjectUpdatedEvent extends Event implements IWebhookCompatibleEvent {
 
 	/**
 	 * CalendarObjectUpdatedEvent constructor.
@@ -67,4 +68,17 @@ public function getShares(): array {
 	public function getObjectData(): array {
 		return $this->objectData;
 	}
+
+	/**
+	 * @return array
+	 * @since 32.0.0
+	 */
+	public function getWebhookSerializable(): array {
+		return [
+			'calendarId' => $this->getCalendarId(),
+			'calendarData' => $this->getCalendarData(),
+			'shares' => $this->getShares(),
+			'objectData' => $this->getObjectData(),
+		];
+	}
 }