curl --request GET \
  --url https://api.bron.org/workspaces/{workspaceId}/balances

{
  "balances": [
    {
      "accountId": "<string>",
      "accountType": "vault",
      "assetId": "<string>",
      "balanceId": "<string>",
      "workspaceId": "<string>",
      "createdAt": "<string>",
      "networkId": "<string>",
      "symbol": "<string>",
      "totalBalance": "<string>",
      "updatedAt": "<string>",
      "withdrawableBalance": "<string>"
    }
  ]
}