const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({cidr: '<string>', description: '<string>'})
};

fetch('https://api.keystoneos.xyz/v1/platforms/me/allowed-ips', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "cidr": "<string>",
  "description": "<string>",
  "created_at": "2023-11-07T05:31:56Z"
}