How to add Users in a Remarketing UserList using Google Ads API?

I'm trying to create a remarketing userList add some users into it using the Java implementation for Google Ads Api.

The custom audience creation part looks fine, I can see it created in the Ads plataform, but looks like the users wasn't included into it.

Print screen: Empty custom audience inside google ads plataform

I'm sending a JsonArray with 2000 user as parameter and hashing it inside this function, and used this samples as reference.

I'm not sure if I misunderstood the documentation or if I'm including the userList in a wrong way or anything like that.

    public JsonArray uploadJsonList(String customerId, JsonArray jsonUsers) throws Exception {                List<Member> members = new ArrayList<>();         JsonObject hashedObj = new JsonObject();         JsonArray arrayJsonHashed = new JsonArray();                          for (JsonValue jsonValue : jsonUsers) {                          JsonObject obj = jsonValue.asObject();             hashedObj = new JsonObject();                          //Getting user data             String normalizedEmail = textUtils.toNormalizedString(obj.get("PESSOA_EMAIL1").toString());             String normalizedPhone = textUtils.toNormalizedString(obj.get("PESSOA_CELULAR").toString());              String normalizedId = obj.get("PESSOA_ID").toString();              normalizedId = removeFirstandLast(normalizedId);                      //Hashing user data             hashedObj.add("pessoa_email1", textUtils.toSHA256String(normalizedEmail));             hashedObj.add("pessoa_celular", textUtils.toSHA256String(normalizedPhone));             hashedObj.add("pessoa_id",normalizedId);             arrayJsonHashed.add(hashedObj);                          //Creating a member list             Member member = new Member();             member.setHashedEmail(textUtils.toSHA256String(normalizedEmail));             member.setHashedPhoneNumber(textUtils.toSHA256String(normalizedPhone));             members.add(member);                  }                  //starting ads services         AdWordsServices adWordsServices = new AdWordsServices();         Customer[] customers = getCustomers(adWordsServices, session);         session.setClientCustomerId(customerId);         AdwordsUserListServiceInterface userListService = adWordsServices.get(session, AdwordsUserListServiceInterface.class);                  // Create a user list.         CrmBasedUserList userList = new CrmBasedUserList();         userList.setName("Test Remarketing Custom Audience - " + System.currentTimeMillis());         userList.setDescription("A list of customers that was readed from big query");                  // CRM-based user lists can use a membershipLifeSpan of 10000 to indicate unlimited; otherwise         // normal values apply.         userList.setMembershipLifeSpan(100L);         userList.setUploadKeyType(CustomerMatchUploadKeyType.CONTACT_INFO);                                  // Create operation.         UserListOperation operation = new UserListOperation();         operation.setOperand(userList);         operation.setOperator(Operator.ADD);         // Add user list.         UserListReturnValue result = userListService.mutate(new UserListOperation[]{operation});         // Display user list.         UserList userListAdded = result.getValue(0);         System.out.printf(                 "User list with name '%s' and ID %d was added.%n",                 userListAdded.getName(), userListAdded.getId());         // Get user list ID.         Long userListId = userListAdded.getId();         // Create operation to add members to the user list based on email addresses.         MutateMembersOperation mutateMembersOperation = new MutateMembersOperation();         MutateMembersOperand operand = new MutateMembersOperand();         operand.setUserListId(userListId);         operand.setMembersList(members.toArray(new Member[members.size()]));                     mutateMembersOperation.setOperand(operand);         mutateMembersOperation.setOperator(Operator.ADD);                  // Add members to the user list based on email addresses.         MutateMembersReturnValue mutateMembersResult =                 userListService.mutateMembers(new MutateMembersOperation[]{mutateMembersOperation});         // Display results.         // Reminder: it may take several hours for the list to be populated with members.         for (UserList userListResult : mutateMembersResult.getUserLists()) {             System.out.printf(                     "%d email addresses were uploaded to user list with name '%s' and ID %d "                             + "and are scheduled for review.%n",                             members.size(), userListResult.getName(), userListResult.getId());         }                          return arrayJsonHashed;     }