1. Launch blob service locally
2. Build android app substituting blob service URL in relevant places
3. Send large notification (ex. 7000 'x' characters) to the device.
4. Observe in blob service terminal that 30s after logging GET request, DELETE request is logged and reported successfull.
5. Build the app again but change the line 38 of DeleteBlobWork.java to sth like "blobhash" (incorrect JSON structure).
6. Send large notification (ex. 7000 'x' characters) to the device.
7. Observe in blob service terminal that 30s after logging GET request, DELETE request is logged and reported unsuccessfull.
8. Finally observe that DELETE request is retried several time - each time after longer period of time but don't wait for the final 10 retry since it will take 17 hours (retries are scheduled according to exponential backoff)