curl --request POST \
  --url https://app.npcbuilder.com/api/conversations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "character_id": "<string>",
  "game_id": "<string>",
  "session_id": "<string>",
  "metadata": {}
}
'

{
  "id": "conv_12345",
  "character_id": "a96c6161-59f5-40f7-955e-459cd11",
  "player_id": "550e8400-e29b-41d4-a716-446655440000",
  "metadata": {
    "location": "tavern"
  },
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z"
}