help with engine blockage

I created a button on the statuscard (padlock icon) to lock and unlock the engine, on the same button, but there is an error when sending the command, I don't know what I'm doing wrong, can anyone help?
This is the relevant part of the code

const handleLockUnlockClick = async () => {
    const command = isEngineBlocked ? 'engineResume' : 'engineStop'; // Alterna o comando
    const response = await fetch('/api/commands/send', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ command }),
    });
  
    if (response.ok) {
      setIsEngineBlocked(!isEngineBlocked); // Alterna o estado
      setSnackbarMessage(isEngineBlocked ? 'Motor bloqueado' : 'Motor desbloqueado'); // Corrigido
      setSnackbarSeverity('success');
    } else {
      setSnackbarMessage('Erro ao enviar comando');
      setSnackbarSeverity('error');
    }
    setSnackbarOpen(true);
  };

const handleSendResume = async (command) => {
    try {
      const response = await fetch(`/api/commands/send`, {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
        },
        body: JSON.stringify({
          deviceId,
          type: command,
        }),
      });
      if (!response.ok) {
        throw new Error('Falha ao enviar Comando');
      }
      showSnackbar('Desbloqueio', 'Comando enviado com sucesso!', 'success');
    } catch (error) {
      showSnackbar('Aviso', 'Comando não enviado!', 'warning');
    }
  };

Abaixo da funçãoresponse utilize o body e defina o device.id

pq nao mandou no whats kkkk, mas agora eu entendi, deu certo valew