Incomplete data retrieval

I am using this <site_base_url>/wp-json/wcfmmp/v1/products api post method to upload some data and retrieve it to show on my react native app and also on WordPress website. the issue is that I am also sending meta_data in my request but when I receive the response it doesnt get me meta_data back, I only receive _wcfm_product_author in meta_data and everything else arrives empty.