When I follow the steps from the readme, the first curl command works ok:
$ curl -d "address=12341234" https://nuntium-stg.instedd.org/tickets.json
{"code":"XXXX","secret_key":"...","status":"pending","data":{"address":"12341234"}}
but the second one returns a response identical to the first:
$ curl 'https://nuntium-stg.instedd.org/tickets/XXXX.json?secret_key=....'
{"code":"XXXX","secret_key":"...","status":"pending","data":{"address":"12341234"}}