services.AddAuthentication(options =>
            {
                options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
                options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
            })
            .AddJwtBearer(JwtBearerDefaults.AuthenticationScheme, options =>
            {
                options.Authority = "http://localhost:4983/";
                options.Audience = "Any";
                options.RequireHttpsMetadata = false;
                options.Events = new JwtBearerEvents();
                options.Configuration = new OpenIdConnectConfiguration();
                options.Events.OnTokenValidated = async context =>
                {
                    IEnumerable<Claim> userClaims = await ReadClaimsFromCacheAsync(context);

                    if (ThereIsNoCache(userClaims))
                    {
                        userClaims = await GetUserInfoAsync(context, authority);
                        await StoreInCacheAsync(userClaims, context);
                    }

                    context.Principal = new ClaimsPrincipal(new ClaimsIdentity(userClaims, "jwt", JwtClaimTypes.Subject, "roles"));
                };
                options.Events.OnAuthenticationFailed = async context =>
                {
                    await TestInvalid(context);
                };
            });

IDX10500: Signature validation failed. No security keys were provided to validate the signature.

public async Task<ServiceResult<FileContentResult>> GetByFileFolderId(int id)
        {
            var file = await FileRepository.GetByFileFolderId( id);
            var locatedFile = (byte[])Convert.ChangeType(file.FileData64, typeof(byte[]));
            var result= new FileContentResult(locatedFile, new
            MediaTypeHeaderValue("application/pdf"))
            {
                FileDownloadName = "SomeFileDownloadName.pdf"
            };
            return Ok(result);
        }

getPDF(fileId): Observable<Blob> {
    const uri = 'MyApiUri/GetByFileFolderId?id=' + fileId;
    return this.http.get(uri, { responseType: 'blob' });
  }

downloadFile(){
this.getPDF()
.subscribe(x => {
  var newBlob = new Blob([x], { type: "application/pdf" });

  const data = window.URL.createObjectURL(newBlob);
  var link = document.createElement('a');
  link.href = data;
  link.download = "SomeFileDownloadName.pdf";
  link.dispatchEvent(new MouseEvent('click', { bubbles: true, cancelable: true, view: window }));
  setTimeout(function () {
      window.URL.revokeObjectURL(data);
      link.remove();
  }, 100);
});
}