To upload files, you need to create a File Spec.
The File Spec schema for uploading files is as follows:
{
"files": [
{
"pattern": "[Mandatory]",
"target": "[Mandatory]",
"props": "[Optional]",
"recursive": "[Optional, Default: 'true']",
"flat" : "[Optional, Default: 'true']",
"regexp": "[Optional, Default: 'false']"
}
]
}