The username/phone/email of the user, required field for login
(depends on the login method)
For example, if the login method is email, then this field should be email
If the login method is phone, then this field should be phone
If the login method is username, then this field should be username
The password/otp of the user, optional field for login (depends on the login method)
For example, if the login method is email, then this field should be password
If the login method is phone/email with otp, then this field should be otp
If the login method is username, then this field should be password
If the login method is social, then this field should be null