curl json format

curl -v -X POST https://api.catapult.inetwork.com/v1/users/{userId}/messages \
    -u {token}:{secret} \
    -H "Content-type: application/json" \
    -d \
    '{
        "from": "+12525089000",
        "to": "+15035555555",
        "text": "Hello there from Bandwidth!"
    }'

http://dev.bandwidth.com/howto/sendSMSMMS.html