Thanks for contacting Syncfusion support.
We would like to inform you that, you can add the additional information to FileManagerResponse. Also, you can use the Id attribute as GUID for your requirement. If you are using this attribute then path parameter contains the file Id’s instead of name. Please refer the below images.
Figure 1: Path contains file names
Figure 2: Path contains file Ids
Please let us know if you need further assistance on this.