Updatecase
If you provide a value for PerformedBy.UserArn you must also have connect:DescribeUser permission on the User ARN resource that you provide <p>Updates the values of fields on a case. Fields to be updated are received as an array of id/value pairs identical to the <code>CreateCase</code> input .</p> <p>If the action is successful, the service sends back an HTTP 200 response with an empty HTTP body.</p>