export type SubjectContext = UserSubjectContext | FGASubjectContext;
export type UserSubjectContext = {
    userId?: string | null;
    tenantId: string;
    permissions?: string[];
    attributes?: Record<string, unknown>;
};
export type FGASubjectContext = {
    entityType: string;
    key: string;
};
export declare function isFGASubjectContext(subject: SubjectContext): subject is FGASubjectContext;