when invoking a rest service call from a workflow my api receives the accept header of a post method as */*
I need this to be application/json

I cannot find a way to set this value, even when trying a custom header of "Accept" and setting the value as a property there my api receives
*/*, application/json

is there a way to do this or is this ?

Also I need to read response headers but cannot see how to do that either.

note also posted in the engagement designer forum.
https://www.devconnectprogram.com/forums/posts/list/0/22693.page#p156189