Group Endpoint

curl -X POST https://api.solute.dev/api/group \
  -H "Content-Type: application/json" \
  -H "X-Api-Key: your_api_key" \
  -d '{
    "groupId": "company_123",
    "userId": "user_123",
    "traits": {
      "name": "Acme Corp",
      "plan": "enterprise",
      "employees": 50
    },
    "timestamp": "2025-01-15T10:30:00Z"
  }'

{
  "success": true,
  "groupId": "company_123"
}