System.ArgumentException was caught
  HResult=-2147024809
  Message=Jwt10204: 'System.IdentityModel.Tokens.JwtSecurityTokenHandler' cannot read this string: '{really long token}'.
The string needs to be in compact JSON format, which is of the form: '<Base64UrlEncodedHeader>.<Base64UrlEndcodedPayload>.<OPTIONAL, Base64UrlEncodedSignature>'.
  Source=System.IdentityModel.Tokens.Jwt
  StackTrace:
       at System.IdentityModel.Tokens.JwtSecurityTokenHandler.ReadToken(String jwtEncodedString)
       at {our namespace}.Providers.JwtTokenServiceProvider.GetToken(String value)
       at {our namespace}.TokenAuthorisationController.Post(TokenRequest request)