public function unsubscribe($contract, Request $request)
 {
     $SyndieContract = SyndieContract::findOrfail($contract);
     $SyndieContract->remove_subscribers($request->user()->user_id);
     Log::notice('perm.contracts.unsubscribe - User Unsubscribed from Contract', ['user_id' => $request->user()->user_id, 'contract_id' => $SyndieContract->contract_id]);
     return redirect()->route('syndie.contracts.show', ['contract' => $contract]);
 }