How to return more than 25 subs

API
17

That’s clear.
Can I use Postman to do the GET request for the token and then the POST for the final token that, if I have understood, will look like this:

{
  "access_token": "0123456789abcdefghijABCDEFGHIJ",
  "refresh_token": "eyJfaWQmNzMtNGCJ9%6VFV5LNrZFUj8oU231/3Aj",
  "expires_in": 3600,
  "scope": ["viewing_activity_read"],
  "token_type": "bearer"
}

?