def METHOD_NAME():
    cartifact = collection_version.contentartifact_set.select_related("artifact").first()
    artifact_name = cartifact.artifact.file.name
    artifact_file = storage.open(artifact_name)
    with tarfile.open(fileobj=artifact_file, mode="r") as tar:
        manifest = get_file_obj_from_tarball(tar, "MANIFEST.json", artifact_name)
        return manifest.read()