perl -E 'my ($datetime, $mpnum, $msisdn) = 
    $ARGV[0]=~/^([\d\-]+\s[\d:,]+).+\[MP(\d{14})\].+msisdn\s:\s(\d+)/;
   say for ($datetime,$mpnum,$msisdn)' 
'2015-03-27 20:39:49,796 ERROR MPesa 7002 webServices 10.201.12.200- [MP27203801969209][301a8a0e-bb59-4182-9a4b-79abbb3ed39a][payBillRechargeAllOperator][McomSendSMSServ­iceImpl][callSpiceSMSApi] - Exit Method with status Map : {smsFlag=true, errorMsgs=null, status=SUCCESS} for msisdn : 9431641426'
__Output__
2015-03-27 20:39:49,796
27203801969209
9431641426