powerBI embedded : embeding report using javascript API

Hi 

We have uploaded .pbix reports to workspaces on azure

We are generating a accesskey at run time and passing the values in a JSON format to PowerBI Angular SDK

But when the API tries to load the report it gets the following error

https://wabi-south-east-asia-redirect.analysis.windows.net/metadata/cluster 401 (Unauthorized)

Our Azure account is in South Central US  

Any help would be appreciated

we are sending all the values back from our .NET MVC controller to our HTML page as show below

var embedConfiguration = {
    type:'report',
    accessToken:'eyJ0eXAiO...Qron7qYpY9MI',
    id:'5dac7a4a-4452-46b3-99f6-a25915e0fe55',
    embedUrl:'https://embedded.powerbi.com/appTokenReportEmbed'
};var $reportContainer =$('#reportContainer');var report =powerbi.embed($reportContainer.get(0), embedConfiguration);