const options = {method: 'GET'};

fetch('http://localhost:8000/api/v1/invitations/{token}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "success": true,
  "data": {
    "token": "<string>",
    "email": "jsmith@example.com",
    "organization": {
      "id": "<string>",
      "name": "<string>",
      "slug": "<string>"
    },
    "expiresAt": "<string>",
    "userExists": true
  },
  "meta": {
    "requestId": "<string>",
    "timestamp": "<string>"
  }
}