I want to parse the message into Gork format in logstash

Question

requestId: e4349d93-1af9-433e-a1d5-dc2ed3503da6, ip: 101.53.23.34, caller: -, user: -, requestTime: 24/Sep/2019:02:42:42 +0000, httpMethod: OPTIONS, resourcePath: /getListOp