[Mem0] Add support for getting all users in python client (#1672)

docs/platform/quickstart.mdx

@@ -230,6 +230,59 @@ curl -X POST "https://api.mem0.ai/v1/memories/search/" \
 ```
 </CodeGroup>
 
+
+### 4.3 Get all users
+
+Get all users, agents, and sessions for which memories exist.
+
+<CodeGroup>
+
+```python Python
+client.users()
+```
+
+```javascript JavaScript
+client.users()
+    .then(users => console.log(users))
+    .catch(error => console.error(error));
+```
+
+```bash cURL
+curl -X GET "https://api.mem0.ai/v1/entities/" \
+     -H "Authorization: Token your-api-key"
+```
+
+
+```json Output
+[
+    {
+        "id": "1",
+        "name": "user123",
+        "created_at": "2024-07-17T16:47:23.899900-07:00",
+        "updated_at": "2024-07-17T16:47:23.899918-07:00",
+        "total_memories": 5,
+        "owner": "alex",
+        "organization": "alex-org",
+        "metadata": {"foo": "bar"},
+        "type": "user"
+    },
+    {
+        "id": "2",
+        "name": "travel-agent",
+        "created_at": "2024-07-01T17:59:08.187250-07:00",
+        "updated_at": "2024-07-01T17:59:08.187266-07:00",
+        "total_memories": 10,
+        "owner": "alex",
+        "organization": "alex-org",
+        "metadata": {"agent_id": "123"},
+        "type": "agent"
+    }
+]
+```
+
+</CodeGroup>
+
+
 ### 4.3 Get All Memories
 
 Fetch all memories for a user, agent, or session using the getAll() method.