import { buildClient } from '@datocms/cma-client-node';
async function run() {
  const client = buildClient({ apiToken: '<YOUR_API_TOKEN>' });
  
  const uploadId = 'xBe7u01029ipxBLQhYzZCJ1cke01zCkuUsgnYtH0017nNzbpv2YcsoMDmw';
  
  const uploadTrack = await client.uploadTracks.create(uploadId, {
    url_or_upload_request_id: '/7/1455102967-image.png',
    type: 'subtitles',
    language_code: 'it-IT'
  });
  
  console.log(uploadTrack);
}
run();