Update a Contact

{
  "first_name": "Jane",
  "last_name": "Smith",
  "email": "jane@acme.com",
  "title": "VP of Engineering",
  "phone_number": "+1-415-555-0132",
  "linkedin_url": "https://linkedin.com/in/janesmith",
  "notes": "Met at SaaStr 2025"
}

{
  "data": {
    "id": "con_abc123",
    "account_id": "acc_def456",
    "account_name": "Acme Corp",
    "first_name": "Jane",
    "last_name": "Smith",
    "email": "jane@acme.com",
    "title": "VP of Engineering",
    "phone_number": "+1-415-555-0132",
    "linkedin_url": "https://linkedin.com/in/janesmith",
    "location": "San Francisco, CA",
    "source": "linkedin",
    "notes": "Met at SaaStr 2025",
    "scoring": {
      "heat_score": "Hot"
    },
    "tags": [
      "Interested",
      "Decision Maker"
    ],
    "created_at": "2025-06-15T10:30:00Z",
    "updated_at": "2025-06-15T10:30:00Z",
    "last_activity_at": "2025-06-15T10:30:00Z",
    "last_activity_type": "outbound_email",
    "last_outbound_at": "2025-06-15T10:30:00Z",
    "last_outbound_type": "email",
    "last_inbound_at": "2025-06-15T10:30:00Z",
    "last_inbound_type": "email"
  }
}