Format Responses in JSON

Example Request:
$ curl -k -X GET -H "Accept: application/json" "https://<FACE_host_name_or_IP>:8443/Face/audioRecording/details?token=6060329a-3786-4d85-a697-59845f8265fb&testCustomData1=testValue1"
Example Response:
{"result":{"code":-1,"message":"Selection criteria insufficient to determine recording. Returning all matches.","matches":[{"match":{"recordingId":671,"isrUcid":"x-isr-ucid-8701-24030@10.10.248.107","ingressCallId":"8701-24030@10.10.248.107","filename":"dhtest.wav","from":"sipp_g711_ulaw","to":"rss_g711_ulaw","start":"2017-03-22 15:06:59"}},{"match":{"recordingId":673,"isrUcid":"x-isr-ucid-1-4355@10.10.248.107","ingressCallId":"1-4355@10.10.248.107","filename":"startstoptest3.wav","from":"sipp_g711_ulaw","to":"rss_g711_ulaw","start":"2017-03-22 16:02:17"}}]}}