public Response signalProcessInstance(Long procInstId) {
String oper = getRelativePath();
Map<String, String[]> params = getRequestParams();
String eventType = getStringParam("signal", true, params, oper);
Object event = getObjectParam("event", false, params, oper);
Command<?> cmd = new SignalEventCommand(procInstId, eventType, event);
processRequestBean.doKieSessionOperation(cmd, deploymentId, procInstId);
return createCorrectVariant(new JaxbGenericResponse(getRequestUri()), headers);