function insertUser(
        address userAddress,
        bytes32 userEmail,
        string    userName)
    public
    returns(uint index) {
        if (isUser(userAddress)) revert();
        userObjects[userAddress].userEmail = userEmail;
        userObjects[userAddress].userName = userName;
        userObjects[userAddress].index = userIndex.push(userAddress)-1;
        LogNewUser(
            userAddress,
            userObjects[userAddress].index,
            userEmail,
            userName);
        return userIndex.length-1;
    }

register(address: string): Observable<any> {
    return Observable.create(observer => {
      this.auth.deployed().then(instance => {
        console.log('add=>', address, 'insertion')
        return instance.insertUser(address, 'something', 'something');
      })
        .then(numberOfUsers => {
          observer.next();
        })
        .catch(e => {
          console.log(e);
          observer.error(e);
        });
    });
  }

this.web3Service.getAccounts().subscribe(accs => {
  this.account = accs[0];
  this._ngZone.run(() =>

  );
}, err => alert(err));
 this.authService.register(this.account).subscribe(data => {
      console.log(data);
    });