export declare class SharedUserCacheKey {
    private static PREFIX;
    private static hashTag;
    static usernameById(userId: string): string;
    static profileByUserName(username: string): string;
    static allProfilesOfUser(userId: string): string;
    static userSettingsOfUser(userId: string): string;
    static userOwnershipNftLinked(userId: string): string;
    /**
     * Data type: Hash
     *
     * Key: `{env}:user:medal_statistics`
     *
     * Hash fields: `total_eligible_medals`, `conversion_rate`, `updated_at` ...
     */
    /**
      * @deprecated
     */
    static medalStatisticsKey(): string;
    static airdropInfoKey(): string;
    static getTokenValidationHashKey(username: string): string;
    static getUserCronHealthCheckKey(identifier: string): string;
    static getReferralLeaderboardRankingsKey(): string;
    static getReferralLeaderboardUpdatedAtKey(): string;
    static getReferralLeaderboardLatestSnapshotTSKey(): string;
    static getUserSubscriptionFeaturesKey(userId: string): string;
    /** @deprecated */
    static getPendingSubscriptionKey(userId: string): string;
}