Trying to get channel's subscriptions only gives error

API
3

ok… so it gives me this example

POST https://id.twitch.tv/oauth2/token
    ?client_id=uo6dggojyb8d6soh92zknwmi5ej1q2
    &client_secret=nyo51xcdrerl8z9m56w9w6wg
    &code=394a8bc98028f39660e53025de824134fb46313
    &grant_type=authorization_code
    &redirect_uri=http://localhost

so what do I set as the code header? it seems like it has something to do with the redirect uri, but since my application is just getting a channel’s information, it wont redirect users. what do I do here?