Write the high-level use case ManageAdvertisement initiated by the Advertiser, and write d...

Write the high-level use case ManageAdvertisement initiated by the Advertiser, and write detailed use cases refining this high-level use case. Consider features that enable an Advertiser to upload advertisement banners, to associate keywords with each banner, to subscribe to notices about new tournaments in specific leagues or games, and to monitor the charges and payments made on the advertisement account. Make sure that your use cases are also consistent with the ARENA problem statement provided in Figure.

Figure: Initial ARENA problem statement.