formId - Upstack Data

Your ID for the form that was submitted. Klaviyo and Postscript receive it.

Type	Example value
`string`	`quote_form`

Sample payload with every parameter for lead:

window._upstack('track', 'lead', {
  // Standard parameters
  value: 150.00,
  currency: 'USD',
  formId: 'quote_form',

  // User data
  email: 'jane@example.com',
  phone: '+15551234567',
  firstName: 'Jane',
  lastName: 'Smith',

  // Custom data
  leadType: 'quote_request',
  source: 'footer_form'
});

Optional on: lead, subscribe, contact