Extract boost list from documents

curl --request POST \
  --url https://api.case.dev/voice/boost-list/extract \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "vault_id": "<string>",
  "object_ids": [
    "<string>"
  ],
  "text": "<string>",
  "categories": [
    "person"
  ]
}
'

{
  "items": [
    {
      "word": "<string>",
      "category": "<string>",
      "boost_param": "low"
    }
  ],
  "source": "document",
  "source_ids": [
    "<string>"
  ]
}