How to extract Docker Daemon json data into proper fields

Hi All, the below is the one event in splunk. How to extract MSG, PromotionId, requestId, status, command fields { [-] log: 2019-10-15 11:56:47.047 INFO paXXX-command-service:ppe [XXXXXX,baff9b4ace879603,baff9b4ace879603] 23 --- [cb-computations-10] c.t.a.p.d.c.CommandStatusHandler : MSG=successfully saved command status, command=CreateXXXX, step=handle, commandStatusId=a570668b-eaa9-44ed-ac90-ac1de811e14a, promotionId=null, status=success, requestId=c5d33666-ecce-4fb1-967c-a71c5621e79e stream: stdout time: 2019-10-15T11:56:47.0473056Z }