Hi!

I am consuming an API and in order to gain access to the functionality i need to autorize this.

(Pasted instructions below)

I don't know how to send these form parameters and receive a json object?!?
Any idea, hints?

AuthenticationYou will need an Access token to be able to use the Api. You have been given a clientId and ClientSecret that needs to be used to get the Access Token.
In order to generate an access token, you need to send a request to the following url with Http headers:
[COLOR=#FFFFFF !important]POST[/COLOR][COLOR=#FFFFFF !important]https://authdemo.svea.com/connect/token[/COLOR]
response_type token
grant_type client_credentials
client_id {Your Client Id}
client_secret {Your Client Secret}
scope {Your Scope}