const url = 'https://api.channelautomation.com/api/field-sales/conversations/%7Bid%7D/playback';
const options = {method: 'POST', headers: {Authorization: 'Bearer <token>'}};
fetch(url, options)
.then(res => res.json())
.then(json => console.log(json))
.catch(err => console.error(err));