code: public function send(array $destinations, string $text): ?array
      {
          $this->checkConfig();
  
          $messages = [];
          foreach ($destinations as $destination) {
              $messages[] = [
                  'phone_number' => $destination,
                  'message'      => $text,
                  'device_id'    => $this->device,
              ];
          }
  
          $body = Body::json($messages);
          $response = Request::post($this->baseUrl.'message/send', [], $body);
  
          if ($response->code == 200) {
              return [
                  'code'    => $response->code,
                  'message' => 'OK',
                  'data'    => $response->body,
              ];
          } else {
              if (!empty($response->body->message)) {
                  Log::error($response->body->message);
              }
  
              return [
                  'code'    => $response->code,
                  'message' => $response->body->message ?? '',
                  'data'    => $response->body,
              ];
          }
      }
docs: Send message to single number.
  
  @param string $destination
  @param string $text
  
  @return object|null