example rollbar.js person config

index.html

<script>
var _rollbarConfig = {
  accessToken: "your token here",
  captureUncaught: true,
  payload: {
    environment: "production",  // or development, etc.
    person: {
      id: "123", // required, a string
      username: "brian", // optional, a string
      email: "brian@rollbar.com"  // optional, a string
    }
  }
}
// then the rest of the js snippet goes here
</script>