const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    name: '<string>',
    type: 'internal',
    algorithm: 'round-robin',
    listeners: [{port: 123, protocol: '<string>', targetPort: 123}]
  })
};

fetch('https://api.example.com/v1/regions/{region}/compute/loadbalancers', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "success": true,
  "data": {
    "id": "<string>",
    "name": "<string>",
    "type": "internal",
    "status": "active",
    "algorithm": "round-robin",
    "vip": "<string>",
    "listeners": [
      {
        "port": 123,
        "protocol": "TCP",
        "targetPort": 123
      }
    ],
    "createdAt": "2023-11-07T05:31:56Z"
  }
}