{
  "operationId": "SubmitAsyncTransaction",
  "method": "POST",
  "path": "/transactions_async",
  "statusCode": "400",
  "example": {
    "summary": "Transaction Malformed",
    "value": {
      "type": "transaction_malformed",
      "title": "Transaction Malformed",
      "status": 400,
      "detail": "Horizon could not decode the transaction envelope in this request. A transaction should be an XDR TransactionEnvelope struct encoded using base64. The envelope read from this request is echoed in the `extras.envelope_xdr` field of this response for your convenience.",
      "extras": {
        "envelope_xdr": ""
      }
    }
  }
}