[Column Name] AccessType and TransactionType (RowKey) [Type] string [Example] user;GetBlob [Description] 
A combination of AccessType and TransactionType, in the following format: ;. These values comprise the RowKey for an individual table entity. The following list describes the values of each type: user is specified for all user requests, including anonymous, authenticated, and SAS requests. system is specified only for requests from Storage Analytics. all is specified if the table entity is a summary of all requests made to the storage service. api-name indicates the applicable operation for the summary entity. For a list of possible operations, see Storage Analytics Logged Operations and Status Messages.