{
  "VolumeModification": {
    "VolumeId": "string",
    "ModificationState": "modifying",
    "StatusMessage": "string",
    "TargetSize": 3,
    "TargetIops": 8,
    "TargetVolumeType": "st1",
    "OriginalSize": 10,
    "OriginalIops": 6,
    "OriginalVolumeType": "st1",
    "Progress": 7,
    "StartTime": "string",
    "EndTime": "string"
  }
}