//
NSURL *receiptURL = [[NSBundle mainBundle] appStoreReceiptURL];
NSData *receiptData = [NSData dataWithContentsOfURL:receiptURL];

//post 
NSDictionary *dict = @{@"receipt-data": [receiptData base64EncodedStringWithOptions:0]};
//dict    "Terminated due to memory issue" 
[request postRequest:dic block:^(NSDictionary* dic){
}];

ask for a solution.