<?php
$data['text'] = "Test:";
            $data['text'] .= var_dump($qiwi->sendMoneyToQiwi([
                'id' => time() * 1000,
                'sum' => [
                    'amount'   => 100,
                    'currency' => 643
                ],
//                'source' => 'account_643',
                'paymentMethod' => [
                    'type' => 'Account',
                    'accountId' => 643
                ],
                'comment' => "Продажа BTC",
                'fields' => [
                    'account' => '+79586184500'
                ]
            ]));
?>