Add file to Notes via REST API using NodeJS

I can successfully create the note.

I now need to upload the file and then link to the note.

Which I think I can do with this endpoint:

I'm POSTing a file using FormData from my app and handling this on my NodeJS server.

Here I use axios to call the Endpoint above.

However, whatever format I pass the file in, I get either a 400 or a 422 returned from the Sugar API.

I've tried several things:

• setting. removing / changing content-type 
• setting / removing content disposition
•  pass file as raw File, FormData, Buffer

// this adds in basepath and sets api version

const fileUrl = getFileUrl(config, noteId)

const fileResponse = await axios.post(fileUrl, file, {
   headers: {
      'OAuth-Token': accessToken,
   },
});