code: public function getSubscription(string $subscriptionId)
      {
          $cacheKey = sprintf('zoho_subscription_%s', $subscriptionId);
          $hit = $this->getFromCache($cacheKey);
  
          if (false === $hit) {
              $response = $this->sendRequest('GET', sprintf('subscriptions/%s', $subscriptionId));
  
              $result = $this->processResponse($response);
  
              $subscription = $result['subscription'];
  
              $this->saveToCache($cacheKey, $subscription);
  
              return $subscription;
          }
  
          return $hit;
      }
docs: @param string $subscriptionId The subscription's id
  
  @throws \Exception
  
  @return array