export interface ISNSResponse {
    Message: string;
    MessageId: string;
    Signature: string;
    SignatureVersion: string;
    SigningCertURL: string;
    Subject?: string;
    SubscribeURL?: string;
    Timestamp: string;
    Token?: string;
    TopicArn: string;
    Type: string;
    [key: string]: string | undefined;
}