curl -X PUT '/v1/auto-forwarding/af_01abc123' \
  -H 'Authorization: Bearer YOUR_ACCESS_TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{
    "min_amount": "50.00",
    "enabled": false
  }'

{
  "success": true,
  "data": {
    "rule_id": "af_01abc123",
    "min_amount": "50.00",
    "enabled": false,
    "updated_at": "2026-04-01T13:00:00Z"
  }
}