the only information we can produce in response to a request like this is the date and time a user registered with signal and the last date of a user s connectivity to the signal service. notably things we don t have stored include anything about a user s contacts such as the contacts themselves a hash of the contacts any other derivative contact information anything about a user s groups such as how many groups a user is in which groups a user is in the membership lists of a user s groups or any records of who a user has been communicating with. all message contents are end to end encrypted so we don t have that information either.
only necessary user logs are kept by the service to ensure quality.