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

fetch('https://sandbox.api.enfinitos.com/v1/webhooks/{subscriptionId}/deliveries/{deliveryId}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "ok": true,
  "data": {
    "delivery": {
      "deliveryId": "<string>",
      "subscriptionId": "<string>",
      "developerId": "<string>",
      "payload": "<string>",
      "firstAttemptedAt": "2023-11-07T05:31:56Z",
      "lastAttemptedAt": "2023-11-07T05:31:56Z",
      "attemptCount": 123,
      "httpStatus": 123,
      "responseBodyExcerpt": "<string>",
      "errorMessage": "<string>",
      "nextRetryAt": "2023-11-07T05:31:56Z",
      "deliveredAt": "2023-11-07T05:31:56Z",
      "signatureHeader": "<string>"
    }
  },
  "contractVersion": "<string>"
}