{
  "by_referred": [
    {
      "earned_by_currency": {
        "usdc": "5.00"
      },
      "member_id": 42,
      "last_trade_at": "2026-08-06T18:22:00Z"
    }
  ],
  "total_earned_by_currency": {
    "usdc": "12.50"
  }
}