orhanbhr

$data_string = json_encode([
    'game_id' => '55f2dc09ba36f81816000001',
    'balance' => '123',
    'currency' => 'EUR',
    'locale' => 'en',
    'player_id' => 'asdf',
    'callback' => $this->callBackUrl,
    'rollback_callback' => $this->rollBackCallBackUrl,
    'bonus_callback' => $this->bonusCallBackUrl,
    'demo' => false,