curl -X POST "https://server.smartlead.ai/api/v1/campaigns/123/leads/789/?api_key=YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "email": "john.doe@company.com",
    "first_name": "John",
    "last_name": "Doe",
    "company_name": "ACME Corp Updated",
    "custom_fields": {
      "job_title": "CEO",
      "company_size": "50-200"
    }
  }'

import requests

API_KEY = "YOUR_API_KEY"

def update_lead(campaign_id, lead_id, **fields):
    response = requests.post(
        f"https://server.smartlead.ai/api/v1/campaigns/{campaign_id}/leads/{lead_id}/",
        params={"api_key": API_KEY},
        json=fields
    )
    
    if response.status_code == 200:
        print(f"✅ Lead {lead_id} updated")
    
    return response.json()

# Update lead details
update_lead(
    123, 789,
    email="john.doe@company.com",
    first_name="John",
    last_name="Doe",
    company_name="ACME Corp",
    custom_fields={"job_title": "CEO", "industry": "SaaS"}
)

const API_KEY = 'YOUR_API_KEY';

async function updateLead(campaignId, leadId, fields) {
  const response = await fetch(
    `https://server.smartlead.ai/api/v1/campaigns/${campaignId}/leads/${leadId}/?api_key=${API_KEY}`,
    {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(fields)
    }
  );
  
  return response.json();
}

await updateLead(123, 789, {
  email: 'john.doe@company.com',
  company_name: 'ACME Corp',
  custom_fields: { job_title: 'CEO' }
});

{
  "success": true,
  "message": "Lead updated successfully"
}