I am getting this preview response under HTTP Request and im not sure how to move on from here to get the data I need. Is this an error? The parameters i have added for the Headers are Client ID and Secret.
Status 500 is something which states Internal Server Error, so your request is not processed by the server. please check if the server is up and running and able to process the request with the inputs.
And one more thing as in the heading of the topic, you need to pass OAuth1 credentials like client id and secret if you have to pass them for the request. check that as well