You can create a signal that sends a single value using `+[RACSignal return:]`. But you don't actually need to return a signal in this case. You can just return the `NSNumber`.

```objc
return [[self enqueueRequest:request resultClass:nil] reduceEach:^id (NSHTTPURLResponse *response, id responseObject) {
            return @(response.statusCode == 204);
        }];
```

(I haven't tested this, but it should work based on what you've said.)