/// <summary>
/// Initializes a new instance of the <see cref="JwtClaims"/> class
/// </summary>
/// <param name="userHandle">User handle</param>
/// <param name="appKey">App key</param>
/// <param name="validFor">Time interval representing how long the token should be valid for.</param>
public JwtClaims(string userHandle, string appKey, TimeSpan validFor)
{
this.UserHandle = userHandle;
this.AppKey = appKey;
TimeSpan expirationUnixTime = TimeUtils.DateTime2UnixTime(DateTime.UtcNow.Add(validFor));
this.ExpirationUnixTime = (long)expirationUnixTime.TotalSeconds;
}