Anyway to get a custom audience size by Facebook Graph API? (2022)

Question

I have already created a custom audiences via facebook marketing API. After that, I have received a response as a Custom_Audience_Id from facebook marketing API. However, everything looks good about this marketing API. But I'm now facing the problem on fetching a size of each Custom Audience ID.

I've found that in the past we can get the size through a field named as 'approximate_count' reference by this thread

I've try this solution on graph api explorer with graph version 15.0 and I get this error

{
  "error": {
    "message": "(#100) Tried accessing nonexisting field (approximate_count) on node type (CustomAudience)",
    "type": "OAuthException",
    "code": 100,
    "fbtrace_id": "AJ9bfXLk0_d_TItI8DSinu_"
  }
}

Anyway, I know that current graph api version (15.0) does not support this approximate_count field. Based on the official document from facebook here and also try to use 64 bit solutions here

As the document said, there are only both approximate_count_lower_bound and approximate_count_upper_bound fields for the current api version(15.0). But that's not what I need. I just need the approximate count for the record lists that I've already inserted into each custom audience.

Are there any solutions to get current size of each custom audience via facebook graph marketing API in 2022?

Thanks a lot!