curl --request GET \
  --url https://api.hypereth.io/v2/hyperliquid/accounts \
  --header 'X-API-KEY: <api-key>'

{
  "accounts": [
    {
      "accountId": "default",
      "address": "0x1234567890abcdef1234567890abcdef12345678",
      "isDefault": true
    },
    {
      "accountId": "acc_A",
      "address": "0xabcdef1234567890abcdef1234567890abcdef12",
      "isDefault": false
    },
    {
      "accountId": "acc_B",
      "address": "0xfedcba0987654321fedcba0987654321fedcba09",
      "isDefault": false
    }
  ],
  "hyperethTimestamp": 1710000001000
}