Getting Error Invalid signature for user or client

Hi All,

I am trying to start Push Job through Rest API (using Chrome Rest Client), but getting Invalid Signature for user Client error. X-Ops-Content-Hash was generated through command prompt by using OpenSSL. I might be doing some mistake while creating Ops Content Hash and Ops Authorization. Could you please let me know process of generating these two request header attributes.

Thanks in advance.

Regards,
Ramu