curl --request POST \
  --url https://api.nitrosend.com/v1/my/segments/count \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "filters": [
    {
      "name": "<string>",
      "predicate": "<string>",
      "value": "<unknown>"
    }
  ]
}
'

{
  "count": 123
}