There are many Q&As on how to append the uploaded files to a FormData before submitting but none is about what if the POST/PUT request payload has to be a nested object with the uploaded files as one part of it.

Here is my payload format:

{
operator: // some String
documentTitle: // some String
time: // some Number
date: // some Date
sections: [
    {
        section_id: 0,
        sortOrder: 0,
        title: "",
        subsections: [
            {
                subsection_id: 0,
                files: []
            },
            {
                subsection_id: 1,
                files: []
            },
        ]
    },
    {
        section_id: 1,
        sortOrder: 1,
        title: "",
        subsections: [
            {
                subsection_id: 0,
                files: []
            },
            {
                subsection_id: 1,
                files: []
            },
        ]
    },
];

}

The files within the subsections should be filled with uploaded files and I still get empty files in my request payload even though I appended them to a FormData