Based on the code I gave you, r is storing:
//{"TTLRN":{"address":"tel:+919886977381","validity":"true","carrierid":"ABCD","carriername":"Myphone","type":"M","country":"India","portingstatus":"false","mcc":"eee","mnc":"000","mdetail":{"carrierid":"","carriername":"","rdate":""},"ddate":"","requestid":"test123","trackingid":"8002"}}
and
log.info (r["TTLRN"])
Will print out the contents of TTLRN:
{"address":"tel:+919886977381","validity":"true","carrierid":"ABCD","carriername":"Myphone","type":"M","country":"India","portingstatus":"false","mcc":"eee","mnc":"000","mdetail":{"carrierid":"","carriername":"","rdate":""},"ddate":"","requestid":"test123","trackingid":"8002"}
What do you want it to do? As nmrao has stated, you are vague on your requirements so we can only guess at what you need help with.