WEB API Authentication: 401 Unauthorized

Hi All,

I'm using cURL to test Dynamics WEB API but I'm having 401 error. I was able to successfully post using the WEB API samples provided by Microsoft but our client requires to use cURL. We can get the access token and send a GET message but not POST. I think we need to provide the Dynamics Credential. Can anyone know the exact header to use?

Thanks!