<?php 

require_once 'vendor/autoload.php';

use MangoPay\MangoPayApi;
use MangoPay\Libraries\ResponseException as MGPResponseException;
use MangoPay\Libraries\Exception as MGPException;

$api = new MangoPayApi();

$api->Config->ClientId = 'your-client-id';
$api->Config->ClientPassword = 'your-api-key';
$api->Config->TemporaryFolder = 'tmp/';

try {
    $userId = '198557165';
    $uboDeclarationId = '198692872';

    $response = $api->UboDeclarations->Get($userId, $uboDeclarationId);

    print_r($response);
} catch(MGPResponseException $e) {
    print_r($e);
} catch(MGPException $e) {
    print_r($e);
}  

{
    "Id": "158947737",
    "UserId": "158947634",
    "CreationDate": 1672153298,
    "ProcessedDate": null,
    "Status": "CREATED",
    "Reason": null,
    "Message": null,
    "Ubos": [
        {
            "Id": "158947898",
            "CreationDate": 1672153693,
            "LastName": "Wiza",
            "FirstName": "Jess",
            "Birthday": 652117514,
            "Nationality": "FR",
            "Address": {
                "AddressLine1": "669 Ratke Forge",
                "AddressLine2": "Schamberger Walk",
                "City": "Paris",
                "Region": "Île-de-France",
                "PostalCode": "75001",
                "Country": "FR"
            },
            "Birthplace": {
                "City": "Paris",
                "Country": "FR"
            },
            "IsActive": true
        }
    ]
}