const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    metadata: {name: '<string>', namespace: '<string>', labels: {}},
    data: {},
    type: 'Opaque'
  })
};

fetch('http://localhost:4065/v1/kubernetes/secrets', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "success": true,
  "data": {},
  "meta": {
    "requestId": "<string>",
    "timestamp": "<string>"
  }
}