*/
@POST
public Response addEvent(String content) throws IOException {
ObjectMapper mapper = new ObjectMapper();
LOGGER.info(String.format("JSON content: '%s'", content));
JsonNode input = mapper.readTree(content);
String eventType = getStringField(input, "eventType");
String groupType = getStringField(input, "groupType");
String groupName = getStringField(input, "groupName");
String chaosTypeName = getStringField(input, "chaosType");