Statistics used for RabbitMQ dashboard

[Thomas TK]

Hi,
I am trying to get the the message_stats rate values  published under the Overview tab. The api/overview REST API always returns 0 for the fields such as below:

{"message_stats":{"publish_details":{"rate":0.0}}}

Any idea how these values can be fetched using API? I am using the same credentials for logging into the dashboard and authenticating the API calls.

Thomas