Feat missing api receive (#359)

Author: jdeniau

core/operations.md

@@ -557,6 +557,9 @@ This action will be automatically registered as a service (the service name is t
 API Platform automatically retrieves the appropriate PHP entity then deserializes it, and for `POST` and `PUT` requests
 updates the entity with data provided by the user.
 
+If you want to bypass the automatic retrieval of the entity, you can set the parameter `_api_receive` to `false`. 
+This way, it will skip the `Read`, `Deserialize` and `Validate` listeners (see [the event system](events.md) for more information).
+
 Services (`$myService` here) are automatically injected thanks to the autowiring feature. You can type-hint any service
 you need and it will be autowired too.