Workflow Payload Limit Exceeded error when uploading large files with axios

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Nacho Caballero : OK, I finally got it to work! Thanks and @UMZ235TK6 for the pointers along the way. In case anyone runs into any troubles uploading large files, here are all the pieces I needed to get it to work:

    const FormData = require('form-data'); // send it as multipart/form-data instead of application/json
    const form = new FormData();
    form.append('title', 'test')
    form.append('audio_file', fs.createReadStream('/tmp/myFile.mp3')) // fs.readFileSync gave a 504 error (Gateway timeout)
    
    this.request = {
      method: "POST",
      url: `https://whatever.com`,
      headers: {
        Authorization: `Bearer ${process.env.MY_TOKEN}`,
        'Content-Type': form.getHeaders()['content-type'] // Specifies `multipart/form-data; boundary=${form._boundary}`. It gave a 400 error without the boundary part
      },
      data: form,
      maxContentLength: Infinity, // This was required for a 30MB file, but I'm not sure what the default size is. 
    };

    this.response = await axios(this, this.request);