Why is JEST showing escape characters for an expected assertion?

I'm currently testing a graphQL query string, however when I run the test, it fails. I'm not sure why the escape character is getting added to my expected value, any thoughts?

const expected = `{"query": "mutation {
  anonymousConsentSet(
    input: {\"name\":\"John Doe\",\"address\":\"123 Main St\",\"phoneNumber\":\"123456677\",\"emailAddress\":\"test@test.com\"}
  )
}", "variables": ""}`;

const mockFormData = {
  firstName: 'John',
  lastName: 'Doe',
  phone: '123456677',
  address: '123 Main St',
  email: 'test@test.com'
};
it('should get expected query', () => {
  const output: any =  createQuery(mockFormData);

  expect(output).toBe(expected);  // <------------This is failing because of unmatched escape characters
});

Notice the expected variable does not contain escape characters, so why is it showing after running the test below?