cinder/api-ref/source/v3/samples/backup-restore-response.json

{
    "restore": {
        "backup_id": "2ef47aee-8844-490c-804d-2a8efe561c65",
        "volume_id": "795114e8-7489-40be-a978-83797f2c1dd3",
        "volume_name": "volume01",
    }
}