How do you get the Receipt Info for In app purchases

[famictech2000]

{
data: '{
"orderId":"GPA.xxxx-xxxx-xxxx-xxxx",
"packageName":"aaa.bbb.ccc",
"productId":"aaa.bbb.ccc.sub",
"purchaseTime":1498002890901,
"purchaseState":0,
"developerPayload":"xxxxxx",
"purchaseToken":"edgcacfhmkpekcilnihgdjkb.AO-J1OxnZr_-c4xGioV-wbb9YI4w7gtRzY87CRLsa6CrHuP_nF97WNzHaBjbqCyZeYYf_sZByLD1DKxkMOFlpIsiOJnSeHxu5XIwa303DbJwFQ7Lo-sM6dgY4-4DCEqk61C9qgUx0GsLaOMZJF0zMC0mRS9K8Z2P3-uSDQpUv0qorTGt7xQC42s",
"autoRenewing":true
}',
signature: 'xxxxxx'
}

how do you get the following from the app when the user makes a purchase?!