data class UserAttributes(
val email: String? = null,
val firstName: String? = null,
val lastName: String? = null,
val phoneNumber: String? = null,
val postalCode: String? = null,
val city: String? = null,
val state: String? = null,
val countryCode: String? = null,
val latitude: String? = null,
val longitude: String? = null,
val dateOfBirth: String? = null,
val gender: String? = null,
val language: String? = null,
val subscriptionTier: String? = null,
val monthsSubscribed: String? = null,
val billingCycle: String? = null,
val lastPaymentAmount: String? = null,
val lastActiveDate: String? = null,
val totalSessions: String? = null,
val custom: Map<String, String> = emptyMap(),
)