getNextSynchronousAuthToken
Retrieve synchronous JWT authentication token. If successful, this call increments synchronous authentication counter.
Return
Returns the JWT for synchronous authentication, for the provided user id.
Parameters
userId
the Futurae account's user id.
Throws
if the SDK is locked
if the SDK cannot find the user account for the provided user-id.
if the SDK cannot access necessary cryptographic material or perform cryptographic operations