Unable to use curl to purge content

I am having trouble with my curl command to purge. Can anyone provide a hint?

curl -sk -X PUT -H “Authorization: TOK:{REST-API-Token}” -H “Content-Type: application/json” -H “Accept: application/json” -d “{ "MediaPath":"http://rsync.vny.{ACCOUNT-ID}.taucdn.net/{ACCOUNT-ID}/test.txt", "MediaType":3}” “https://api.edgecast.com/v2/mcc/customers/{ACCOUNT-ID}/edge/purge

There is no message of either failure or success returned.

Thank you for your time.