Save the Seald account to SSKS.
|sessionId||Session ID given by SSKS to your app's server.|
|authFactor||Authentication method of this user, to which SSKS has sent a challenge at the request of your app's server.|
|challenge||The challenge sent by SSKS to the user's authentication method. Set to empty string if the SSKS server replies to challenge_send API call with |
|rawTMRSymKey||The raw encryption key used to encrypt / decrypt the stored identity keys. This MUST be a cryptographically random buffer of 64 bytes.|
|identity||The identity to save.|