/**
 *
 *
 * @class RelayMeta
 */
export declare class RelayMeta {
    /**
     *
     * Creates a RelayMeta object using a JSON string
     * @param {string} json - JSON string.
     * @returns {RelayMeta} - RelayMeta object.
     * @memberof RelayMeta
     */
    static fromJSON(json: string): RelayMeta;
    readonly blockHeight: BigInt;
    /**
     * Relay Meta.
     * @constructor
     * @param {number} blockHeight - Block Height.
     */
    constructor(blockHeight: BigInt);
    /**
     *
     * Creates a JSON object with the RelayMeta properties
     * @returns {JSON} - JSON Object.
     * @memberof RelayMeta
     */
    toJSON(): {
        block_height: number;
    };
    /**
     *
     * Check if the RelayMeta object is valid
     * @returns {boolean} - True or false.
     * @memberof RelayMeta
     */
    isValid(): boolean;
}