var auth0 = new ManagementClient({
domain: '{YOUR_TENANT_AND REGION}.auth0.com',
clientId: '{YOUR_CLIENT_ID}',
clientSecret: '{YOUR_CLIENT_SECRET}',
});

// Get All Phone Templates
const getAllPhoneTemplates = await auth0.branding.getAllPhoneTemplates();

// Get Phone Template
  const getPhoneTemplate = await auth0.branding.getPhoneTemplate({ id: '<ID>' });

// Create Phone Template Payload
  const createPhoneTemplatePayload: CreatePhoneTemplateRequestContent = {
    type: "otp_verify",
    disabled: false,
    content: {
      syntax: "Test",
      from: "+9832832",
      body: {
        text: "Hi!!"
      }
    }
  }

// Create Phone Template
  const createPhoneTemplate = await auth0.branding.createPhoneTemplate(createPhoneTemplatePayload);

// Update Phone Template Payload
  const updatePhoneTemplatePayload: UpdatePhoneTemplateRequestContent = {
    content: {
      from: "+1234567890",
      body: {
        text: "Hi!! This is Updated"
      }
    }
  }

// Update Phone Template
  const updatePhoneTemplate = await auth0.branding.updatePhoneTemplate({id: "<ID>"},updatePhoneTemplatePayload);

// Delete Phone Template
  const deletePhoneTemplate = await auth0.branding.deletePhoneTemplate({ id: "<ID>" });

// Reset Template
  const resetTemplate = await auth0.branding.resetTemplate({ id: "<ID>" }, null);