Use the /api/<entity name>
request.
You can find out an entity’s name using the /api/doc/rest_json_api
request.
An example
curl -i -k \
-H "Accept: application/json" \
-H 'Authorization: WSSE profile="UsernameToken"' \
-H 'X-WSSE: UsernameToken Username="Dmitry Fedyuk", PasswordDigest="ya9BoQFPMgrV66x7aW+F937qKE0=", Nonce="NmVkOGMzN2VjZjE5MTllOA==", Created="2017-06-03T23:50:42+03:00"' \
https://localhost.com:848/app_dev.php/api/extenddfcustomers