UserKeyRequest object consists of the following fields:
A string containing the user's RSA public key. The key must be 4096 bits. Only PKCS8 format is allowed.
A 64-bit integer containing the RSA key expiration date. This value is only set for rotated keys.
A string indicating the action to be performed on the user's RSA.
The following actions can be performed on the user's active RSA key:
The following actions can be performed onto the user's rotated RSA key: