How do I access "processing_time" from the data below. I want to get the average time. It is not listed as a field.
{"@type":"log:LogIncomingRequestEvent","level":"INFO","when":"2014-05-29 16:04:06,459","method":"LogFilter.logIncomingRequest#156","thread":"http-bio-8087-exec-4","init_tid":"b0507da3-6687-4028-8fe2-8c98c92b783d","request":{ "@type":"log:IncomingRequest", "client_ip":"pqal.corp.net","http_method":"POST","url":"/mms/v1/transfers","user_agent":"Apache-HttpClient/4.3.2 (java 1.5)","processing_time":137},"msg":"OK"}
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