code: @NotNull
      @ObjectiveCName("doSignupWithName:withSex:withTransaction:")
      public Promise<AuthRes> doSignup(String name, Sex sex, String transactionHash) {
          return modules.getAuthModule().doSignup(name, sex, transactionHash);
      }
docs: Signing Up
  
  @param name            name
  @param sex             sex of user
  @param transactionHash transaction hash
  @return promise of AuthRes