/**
 * Verify an incoming interaction's signature.
 * @param publicKey Your Application's Public Key
 * @param timestamp Interaction Request's "X-Signature-Timestamp" Header
 * @param signature Interaction Request's "X-Signature-Ed25519" Header
 * @param body Raw Interaction Request Body - If you parse this as JSON beforehand, verification will fail for certain interactions.
 * @returns Whether or not the signature is valid.
 */
export default function verifyInteractionSignature(publicKey: string, signature: string, timestamp: string, body: string): Promise<boolean>;