Assign User to Wallet

If an admin is not a member of the wallet, request wallet access.

This operation is similar to the assign_user command, the differences are:

    1. Requires admin access
    1. No need to send user_id (it's ignored if sent)

The user must not be a member of the wallet to request access (this is the case for regular assign_user
as well, where user_id shouldn't be a member).
When an external user initiates the election, it's ok as he's not a member of the wallet
and his initial vote will not be cast.

Click Try It! to start a request and see the response here!