const dataBlockId = '22222222';

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

const content = await response.text();
console.log(content);

import requests

data_block_id = '22222222'

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

print(response.text)

The response body contains the uploaded content with the original Content-Type header.

{
    "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
}