const form = new FormData();
form.append('model', '<string>');
form.append('audio_url', '<string>');
form.append('audio_b64', '<string>');
form.append('language', '<string>');
form.append('provider', '{
  "order": [
    "<string>"
  ],
  "only": [
    "<string>"
  ],
  "ignore": [
    "<string>"
  ],
  "include_alpha": true
}');

const options = {method: 'POST', headers: {Authorization: 'Bearer <token>'}};

options.body = form;

fetch('https://api.phaseo.app/v1/audio/transcriptions', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "text": "<string>"
}