curl --request GET \
  --url https://api.thehaystack.ai/v2/haystack/speakers/{speakerId} \
  --header 'Authorization: Bearer <token>'

{
  "speaker": {
    "id": 123,
    "name": "Pastor John Smith",
    "bio": "<string>",
    "imageUrl": "<string>",
    "imageFilename": "<string>",
    "itemCount": 123
  }
}