export declare const HL_DOMAIN: {
    readonly name: "Exchange";
    readonly version: "1";
    readonly chainId: 1337;
    readonly verifyingContract: "0x0000000000000000000000000000000000000000";
};
export declare const HL_TYPES: {
    Agent: {
        name: string;
        type: string;
    }[];
};
export declare const generateHLActionHash: ({ action, nonce, vaultAddress, expiresAfter, }: {
    action: Record<string, any>;
    nonce: number;
    vaultAddress?: string;
    expiresAfter?: number;
}) => string;
export declare const signHLAction: ({ privateKey, action, nonce, vaultAddress, isTestnet, }: {
    privateKey: string;
    action: Record<string, any>;
    nonce: number;
    vaultAddress?: string;
    isTestnet?: boolean;
}) => Promise<{
    r: string;
    s: string;
    v: number;
}>;