Security
You must enable secure authentication mode for your production apps; otherwise, unauthorized access to your users' inbox messages is possible.
userToken
The userToken is a token (JWT) generated for your users by your secure backend server using a secret private key generated from Engagespot console. This ensures secure authentication for your user's In-App inbox.
render('#bellIcon', {
apiKey="apiKey"
userId="userId"
userToken="Required if secure auth is enabled on your Engagespot app"
})