new_contents: import grpc
  
  from cli import crypto
  from schema.primitive_pb2 import Signature
  from schema.block_pb2 import Transaction
  from schema.endpoint_pb2_grpc import CommandServiceStub, QueryServiceStub
  
  import datetime
  
  """
  message Header {
    uint64 created_time = 1;
    repeated Signature signatures = 2;
  }
  
  message Signature {
     bytes pubkey    = 1;
     bytes signature = 2;
  }
  
  
   message Transaction {
    message Payload {
       repeated Command commands = 1;
      string creator_account_id = 2;
      uint64 tx_counter  = 3;
      uint64 created_time = 4;
     }
  
    Payload payload = 1;
    repeated Signature signature = 2;
   }
   
          AddAssetQuantity add_asset_quantity = 1;
          AddPeer add_peer = 2;
          AddSignatory add_signatory = 3;
          CreateAsset create_asset = 4;
          CreateAccount create_account = 5;
          CreateDomain create_domain = 6;
          RemoveSignatory remove_sign = 7;
          SetAccountPermissions set_permission = 8;
          SetAccountQuorum set_quorum = 9;
          TransferAsset transfer_asset = 10;
          AppendRole append_role = 11;
          CreateRole create_role = 12;
          GrantPermission grant_permission = 13;
          RevokePermission revoke_permission = 14;
          ExternalGuardian external_guardian = 15;
  """
  
  def generateTransaction(account_id, commands):
      return Transaction(
          payload=Transaction.Payload(
              commands=commands,
              creator_account_id=account_id,
              tx_counter=0,
              created_time=int(datetime.datetime.now().timestamp() * 1000)
          ),
          signature=[Signature()]
      )
  
  
  def sendTx(location, tx):
      try:
          crypto.hash((tx.payload.SerializeToString()))
          channel = grpc.insecure_channel(location)
          stub = CommandServiceStub(channel)
          stub.Torii(tx, timeout=1)  # wait 1s
          return True
      except Exception as e:
          print(e)
          return False
  
subject: Update network