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

fetch('https://api.valox.co/api/v1/owners', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "data": {
    "owners": [
      "0x3270bf32AB647e90eF94A026c70Aa1daaaDA2382"
    ]
  }
}