Get onboarding bank accounts

curl --request POST \
  --url https://api.etherfuse.com/ramp/onboarding/bank-accounts \
  --header 'Content-Type: application/json' \
  --data '{
  "presigned_url": "https://example.com/verify?token=xyz"
}'

{
  "bank_accounts": [
    {
      "bank_account_id": "123e4567-e89b-12d3-a456-426614174000",
      "customer_id": "123e4567-e89b-12d3-a456-426614174001",
      "created_at": "2024-01-01T00:00:00Z",
      "updated_at": "2024-01-01T00:00:00Z",
      "abbr_clabe": "1234...5678",
      "status": "active"
    }
  ]
}