const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    filename: 'document.pdf',
    contentType: 'application/pdf',
    name: 'Chapter 1 Notes',
    folderId: '<string>',
    extractImages: true,
    references: [{title: 'Understanding Photosynthesis', url: 'https://example.com/article'}]
  })
};

fetch('https://studyfetchapi.com/api/v1/materials/upload/presigned-url', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "uploadUrl": "<string>",
  "s3Key": "<string>",
  "materialId": "<string>"
}