curl --request GET \
  --url https://api.stardex.ai/v1/deal-activities/{id} \
  --header 'Authorization: Bearer <token>'

{
  "success": true,
  "data": {
    "id": "901e2345-e67f-89ab-cdef-456789012345",
    "deal_id": "123e4567-e89b-12d3-a456-426614174000",
    "activity_type": "call_note",
    "activity_content": "<p>30-min call with VP Engineering. Aligned on scope and timeline.</p>",
    "activity_raw_content": "30-min call with VP Engineering. Aligned on scope and timeline.",
    "is_starred": false,
    "created_by": {
      "id": "7d57bf3f-b470-48c0-ac98-a3f75b817209",
      "first_name": "Pranav",
      "last_name": "Patel"
    },
    "created_at": "2024-01-15T10:30:00Z",
    "updated_at": "2024-01-15T10:30:00Z"
  }
}