HatangUser
data class HatangUser(val userId: String? = null, val email: String? = null, val name: String? = null, val phone: String? = null, val hash: String? = null, val data: Map<String, Any?>? = null)
The identity a host app attaches to the visitor with identify.
hash is the HMAC-SHA256 (hex) of userId (or the email when there is no user id) computed on the host's server with the site's identity secret; it proves the identity so the visitor can be merged with earlier sessions.