List buyer titles

curl https://api.clustr-ai.com/api/public/buyer-titles \
  -H "Authorization: Bearer YOUR_API_KEY"

{
  "success": true,
  "data": {
    "keywords": [
      {
        "clustr_keyword_id": "kw_6xzgkggzx1gne7qbxbz5ph658q",
        "id": 41,
        "keyword": "CFO"
      },
      {
        "clustr_keyword_id": "kw_d69pbmkm13axteg0b2b0mnh33b",
        "id": 42,
        "keyword": "Head of Finance"
      }
    ],
    "count": 2
  }
}