Parameters to pass get access token using acquireTokenSilent (MSAL.js)

[arishidalgo]

Hi Guys, 

Newbie here for both Power BI and Javascript. Based on my code below, it seems it gives me an 'access' code but when I use it as a bearer token to get the embed token it throws an 403 forbidden error when I try/simulate it via Postman. However, if I get the access token via Postman I can use the returned access token and use that to get the embed token. 

Programatically:

// Add here scopes for access token to be used 
        const tokenRequest = {
            scopes: ["openid", "user.read"]
        };

        const myMSALObj = new Msal.UserAgentApplication(msalConfig, function (errorDes, token, error, tokenType, instance) {
            // this callback is called after loginRedirect OR acquireTokenRedirect. It's not used with loginPopup,  acquireTokenPopup.
            if (error) {
                console.log(error + ": " + errorDes);
            }
            else
                console.log("Token type = " + tokenType);

        });

        debugger;
        myMSALObj.loginPopup(loginRequest)
            .then((loginResponse) => {
                //Login Success callback code here
                debugger;
                console.log("id_token acquired at: " + new Date().toString());
                console.log(loginResponse);
                myMSALObj.acquireTokenSilent(tokenRequest).then(function (accessTokenResponse) {
                    // Acquire token silent success
                    // Call API with token
                    debugger;
                    let accessToken = accessTokenResponse.accessToken;

Postman (see attachment)