var USER_ID = "12148";
var USER_SIGNUP_DATE = "2020-01-02T21:07:03Z";
mixpanel.people.set({
"$email": "jsmith@example.com", // only reserved properties need the $
"Sign up date": USER_SIGNUP_DATE, // Send dates in ISO timestamp format (e.g. "2020-01-02T21:07:03Z")
"USER_ID": USER_ID, // use human-readable names
"credits": 150 // ...or numbers
});
