Mpc
constructor(backupMethod: String?, clientPlatform: String = CLIENT_PLATFORM, clientPlatformVersion: String, isMultiBackupEnabled: Boolean? = null, mpcServerVersion: String, optimized: Boolean = true, chainId: String = "", curve: String = "SECP256K1", isRaw: Boolean? = null, signatureApprovalMemo: String? = null, sponsorGas: Boolean? = null, reqId: String? = null)