code: public function setUnblockSpam($ipblock,$ipv4)
      {
  		if (!$ipblock)
  			throw new BadMethodCallException('Parameter $ipblock is missing.');
  		if (!$ipv4)
  			throw new BadMethodCallException('Parameter $ipv4 is missing.');
  		
          try {
              $r = $this->post('ip/' . urlencode($ipblock) . '/spam/' . $ipv4 .'/unblock' )->send();
          } catch (\Exception $e) {
              throw new IpException($e->getMessage(), $e->getCode(), $e);
          }
          return $r->getBody(true);
      }
docs: Set UnblockSpam - Trigger unblocking of IP on Spam block
  
  @param string $ipBlock
  @param string $ipv4
  @return string Json
  @throws Exception\IpException
  @throws Exception\IpNotFoundException