message: debugging ledger demo test
diff: "\"signature\": null"\
  "}", theirVerkey, myDid, nymReqId];
  - // TODO: 110 Error
  + // TODO: 110 or 304 error Error. some issue with nymTxnRequest
  // 11. Send NYM request with signing
  __block NSString *nymTxnResponse;
  completionExpectation = [[ XCTestExpectation alloc] initWithDescription: @"completion finished"];
  