const dataBlockId = '22222222';

const response = await fetch(`https://service.pcibooking.net/api/dataBlock/${dataBlockId}`, {
  headers: {
    'Authorization': 'APIKEY your-api-key'
  }
});

const data = await response.json();
console.log(data);

import requests

data_block_id = '22222222'

response = requests.get(
    f'https://service.pcibooking.net/api/dataBlock/{data_block_id}',
    headers={
        'Authorization': 'APIKEY your-api-key'
    }
)

print(response.json())

{
    "UserId": "Nadya",
    "OwnerId": "Frodo",
    "Id": "22222222",
    "Reference": "my reference",
    "ContentType": "text/plain",
    "DataSize": 6750,
    "CreationTime": "2019-01-16T11:21:25.3241104Z",
    "LastAccessedTime": "2019-01-17T10:21:25.3241104Z",
    "LastModifiedTime": "2019-01-17T06:21:25.3241104Z",
    "DataBlockLocation": "DE"
}

{
    "code": -125,
    "message": "Bad input data",
    "moreInfo": "...",
    "errorList": null
}

{
  "code": -1003,
  "message": "Not authorized to access this resource",
  "moreInfo": "Bad or missing authorization data, expected APIKEY",
  "errorList": null
}

{
    "code": -1001,
    "message": "Uri not found",
    "moreInfo": "Data block not found",
    "errorList": null
}