mixnet: {
      /**
       * Register a mixnode for the following session.
       **/
      register: AugmentedSubmittable<(registration: PalletMixnetRegistration | { blockNumber?: any; sessionIndex?: any; authorityIndex?: any; mixnode?: any } | string | Uint8Array, signature: SpMixnetAppSignature | string | Uint8Array) => SubmittableExtrinsic<ApiType>, [PalletMixnetRegistration, SpMixnetAppSignature]>;