Running BASH commands via REST API

I am trying to run bash commands via the REST API but am getting an error. When trying to use the following syntax I am getting a 403 running with Admin authentication...

GET: https://F5LTM/mgmt/tm/util/bash

Output:

{"code":403,"message":"Operation is not allowed on component /util/bash.","errorStack":[]}

 

Does anyone know if this is possible, or have any syntax examples of how to run bash commands? I assume you need to submit a post request, but I am not sure how to structure the syntax in the body of the request and cannot find any examples.