problem to convert Json schema to ABAP internal table

Dear Experts ,

my database table contains json data , now i have to convert that data into internal table . my tried number of methods but unfortunately i didn't get proper result.

json data is like

{

"userSession": {

"name": "X1234500",

"lastname": "",

"firstname": "",

"emailaddress": "",

"connRegistrationId": "738b584ebf8258c",

"userSystemId": "xxxxx"

},

"bfmData": [

{

"controlArea": "1000",

"rpaGroup": "US"

},

{

"controlArea": "1000",

"rpaGroup": "TS"

},

{

"controlArea": "1000",

"rpaGroup": "AS"

}

]

}

how do i convert that data into internal table .

please guide me.

Regards,

Venkatesh.