Create a shard copy, move, modify storage type task
Source object ID
Target bucket ID (must be the same as the source object's bucket)
Target directory ID (default to root directory when not filled)
Storage type
1: HighSpeed
2: StandardSpeed
3: LowSpeed
Task type (range:4,5,6)
1: Upload
2: Download
3: Preview
4: Copy
5: Move
6: ChangeStorageClass
Whether to clear task (true: clear, false: not clear, default: false)
Task ID (used in complete, move, and change storage type operations)
{
"task_id": "2013****3088"
}