User Credential
data class UserCredential(val algorithm: String? = "pbkdf2-sha256", val counter: Int? = 0, val createdDate: Long? = Date().time, val digits: Int? = 0, val hashIterations: Int? = 27500, val hashedSaltedValue: String?, val period: Int? = 0, val salt: String? = null, val type: String? = "password", val config: Map<String, String>? = emptyMap())