curl --request GET \
  --url https://flozy-backend-1042419926531.us-central1.run.app/api/v1/external/leads/{leadId}/contacts/{contactId} \
  --header 'X-API-Key: <api-key>'

{
  "http_code": 200,
  "status": "success",
  "message": "Contact retrieved",
  "data": {
    "id": "550e8400-e29b-41d4-a716-446655440000",
    "full_name": "Jane Smith"
  }
}