AddWalletToUser adds a single wallet to a user in the DB because a signature needs to be provided and validated per address.

CreateUser creates a new user.

GetUser returns a user by ID or address or username.

RemoveWalletsFromUser removes wallets from a user in the DB, and returns the IDs of the wallets that were removed.

UpdateUserInfo updates a user by ID and ensures that if they are using an ENS name as a username that their address resolves to that ENS.

AddUserAddressesInput is the input for the user add addresses pipeline and also user creation pipeline given that they have the same requirements.

AddUserAddressOutput is the output of the user add address pipeline.

CreateUserOutput is the output of the user create pipeline.

GetUserInput is the input for the user get pipeline.

GetUserOutput is the output of the user get pipeline.

MergeUsersInput is the input for the user merge pipeline.

RemoveUserAddressesInput is the input for the user remove addresses pipeline.