Original path as manifest key, new path as value?

I'm trying for some time now to achieve the below structure, to have a PHP script read the manifest.
For that I need the original path as json key, and the new file name + hash as value:
```json
 {
      "original/path/to/img/image.jpg": "image-34c9d558b2.jpg"
}
```

But after everything I have tried so far, I think it might not be possible with gulp-rev, is this accurate?

Thank you :)