export interface Payload {
    external_id?: string;
    email?: string | null;
    app_version?: string | null;
    device_id?: string | null;
    device_model?: string | null;
    device_platform?: string | null;
    device_token?: string | null;
    language?: string | null;
    country?: string | null;
    city?: string | null;
    current_location?: {
        latitude?: number;
        longitude?: number;
    };
    device_os_version?: string | null;
    timezone?: string | null;
    user_agent?: string | null;
    custom_attributes?: {
        [k: string]: unknown;
    };
}
