diff --git a/homeassistant/components/nest/__init__.py b/homeassistant/components/nest/__init__.py
index 87682c7043e..fce475e1788 100644
--- a/homeassistant/components/nest/__init__.py
+++ b/homeassistant/components/nest/__init__.py
@@ -122,13 +122,14 @@ class SignalUpdateCallback:
         device_entry = device_registry.async_get_device({(DOMAIN, device_id)})
         if not device_entry:
             return
-        for event in events:
-            if not (event_type := EVENT_NAME_MAP.get(event)):
+        for api_event_type, image_event in events.items():
+            if not (event_type := EVENT_NAME_MAP.get(api_event_type)):
                 continue
             message = {
                 "device_id": device_entry.id,
                 "type": event_type,
                 "timestamp": event_message.timestamp,
+                "nest_event_id": image_event.event_id,
             }
             self._hass.bus.async_fire(NEST_EVENT, message)
 
diff --git a/homeassistant/components/nest/events.py b/homeassistant/components/nest/events.py
index abfe688c71c..6802a98cc40 100644
--- a/homeassistant/components/nest/events.py
+++ b/homeassistant/components/nest/events.py
@@ -17,12 +17,22 @@ NEST_EVENT = "nest_event"
 # The nest_event namespace will fire events that are triggered from messages
 # received via the Pub/Sub subscriber.
 #
-# An example event data payload:
+# An example event payload:
+#
 # {
-#   "device_id": "enterprises/some/device/identifier"
-#   "event_type": "camera_motion"
+#   "event_type": "nest_event"
+#   "data": {
+#       "device_id": "my-device-id",
+#       "type": "camera_motion",
+#       "timestamp": "2021-10-24T19:42:43.304000+00:00",
+#       "nest_event_id": "KcO1HIR9sPKQ2bqby_vTcCcEov..."
+#   },
+#   ...
 # }
 #
+# The nest_event_id corresponds to the event id in the SDM API used to retrieve
+# snapshots.
+#
 # The following event types are fired:
 EVENT_DOORBELL_CHIME = "doorbell_chime"
 EVENT_CAMERA_MOTION = "camera_motion"
diff --git a/tests/components/nest/test_events.py b/tests/components/nest/test_events.py
index df459a35f71..6e9dd7dd40d 100644
--- a/tests/components/nest/test_events.py
+++ b/tests/components/nest/test_events.py
@@ -1,4 +1,4 @@
-"""Test for Nest binary sensor platform for the Smart Device Management API.
+"""Test for Nest events for the Smart Device Management API.
 
 These tests fake out the subscriber/devicemanager, and are not using a real
 pubsub subscriber.
@@ -117,6 +117,7 @@ async def test_doorbell_chime_event(hass):
         "device_id": entry.device_id,
         "type": "doorbell_chime",
         "timestamp": event_time,
+        "nest_event_id": EVENT_ID,
     }
 
 
@@ -144,6 +145,7 @@ async def test_camera_motion_event(hass):
         "device_id": entry.device_id,
         "type": "camera_motion",
         "timestamp": event_time,
+        "nest_event_id": EVENT_ID,
     }
 
 
@@ -171,6 +173,7 @@ async def test_camera_sound_event(hass):
         "device_id": entry.device_id,
         "type": "camera_sound",
         "timestamp": event_time,
+        "nest_event_id": EVENT_ID,
     }
 
 
@@ -198,6 +201,7 @@ async def test_camera_person_event(hass):
         "device_id": entry.device_id,
         "type": "camera_person",
         "timestamp": event_time,
+        "nest_event_id": EVENT_ID,
     }
 
 
@@ -234,11 +238,13 @@ async def test_camera_multiple_event(hass):
         "device_id": entry.device_id,
         "type": "camera_motion",
         "timestamp": event_time,
+        "nest_event_id": EVENT_ID,
     }
     assert events[1].data == {
         "device_id": entry.device_id,
         "type": "camera_person",
         "timestamp": event_time,
+        "nest_event_id": EVENT_ID,
     }