Check that the geojson works by setting it up as a static geodata layer.
Then make a area layer with the geojson as input, BRTNR as dimension.I checked the geojson and used BRTNR as the "Source key attribute".
See the attached Sense app for more details. Note 1, this example requires Qlik GeoAnalytics. Note 2, this app features data from an external service which might be out of service.
Authentication in ArcGIS
Special note regarding Authentication in ArcGIS (Thanks to ssamuels for the solution)
The authentication when working with secured map services from ESRI can be solved by setting up a REST connection in the loadscript to retrieve a new access token from the REST API of ArcGIS Online. This is done by sending a GenerateToken request to the URL "https://www.arcgis.com/sharing/generateToken?parameters". The REST call must be a POST request over https and takes the following parameters:
username - Username of the user who wishes to get a token.
password - Password of user who wishes to get a token.
referer - The base URL of the web application that will invoke the services
expiration - The token expiration time in minutes (default value for this parameter is 60 minutes)
f - The response format. The value for this parameter must be "json".
The resulting access token is stored in the data model and can be used as a text variable to append to the location service url in the GeoAnalytics extension.