or download this
#!perl
...
curl -H "Content-Type: text/plain" --data '{"key":"[your-key-here]","a
+ddr":"183qrMGHzMstARRh2rVoRepAd919sGgMHb","callback":"https://mystore
+.com?invoice_id=123","onNotification":"KEEP", "op":"RECEIVE", "confs"
+: 5}' https://api.blockchain.info/v2/receive/balance_update