title: Is there any endpoint to get all custom audiences (facebook API)?
body: <p>i need some help please, 
  i can't find any ENDPOINT to get list of all custom audiences</p>
  
  <p><a href="https://developers.facebook.com/docs/marketing-api/reference/custom-audience" rel="nofollow noreferrer">https://developers.facebook.com/docs/marketing-api/reference/custom-audience</a></p>
  
  <p>thanks </p>