{
    "volume": {
        "display_name": "vol-001",
        "display_description": "Another volume.",
        "size": 30,
        "volume_type": "289da7f8-6440-407c-9fb4-7db01ec49164",
        "metadata": {"contents": "junk"},
        "availability_zone": "us-east1"
     }
}