curl --request POST \
  --url https://sandbox.api.btdx.io/orders/batch \
  --header 'Content-Type: application/json' \
  --header 'authorization: <authorization>' \
  --data '
{
  "requests": [
    {
      "walletId": "<string>",
      "marketId": "<string>",
      "outcomeId": "<string>",
      "price": 123,
      "stake": 123,
      "keepWhenInPlay": true,
      "reference": "<string>",
      "commissionRateId": "<string>"
    }
  ]
}
'

{
  "_meta": {
    "_count": 123,
    "_page": {
      "_pageNumber": 123,
      "_pageSize": 123,
      "_totalElements": 123,
      "_totalPages": 123
    }
  },
  "orders": [
    {
      "id": "<string>",
      "appId": "<string>",
      "market": {
        "_ref": "<string>",
        "_ids": [
          "<string>"
        ]
      },
      "walletId": "<string>",
      "outcomeId": "<string>",
      "outcomeTitle": "<string>",
      "price": 123,
      "stake": 123,
      "stakeUnmatched": 123,
      "stakeVoided": 123,
      "keepWhenInPlay": true,
      "createdAt": "2023-11-07T05:31:56Z",
      "modifiedAt": "2023-11-07T05:31:56Z",
      "commissionRateId": "<string>",
      "reference": "<string>",
      "cancellationReason": "<string>"
    }
  ],
  "markets": [
    {
      "id": "<string>",
      "name": "<string>",
      "published": true,
      "suspended": true,
      "lockAt": "2023-11-07T05:31:56Z",
      "settledAt": "2023-11-07T05:31:56Z",
      "event": {
        "_ref": "<string>",
        "_ids": [
          "<string>"
        ]
      }
    }
  ],
  "events": [
    {
      "id": "<string>",
      "eventGroup": {
        "_ref": "<string>",
        "_ids": [
          "<string>"
        ]
      },
      "name": "<string>",
      "code": "<string>",
      "expectedStartTime": "2023-11-07T05:31:56Z",
      "active": true
    }
  ],
  "trades": [
    {
      "order": {
        "_ref": "<string>",
        "_ids": [
          "<string>"
        ]
      },
      "id": "<string>",
      "price": 123,
      "stake": 123,
      "profitLoss": 123,
      "createdAt": "2023-11-07T05:31:56Z"
    }
  ],
  "eventGroups": [
    {
      "id": "<string>",
      "name": "<string>",
      "subcategory": {
        "_ref": "<string>",
        "_ids": [
          "<string>"
        ]
      }
    }
  ],
  "subcategories": [
    {
      "id": "<string>",
      "name": "<string>",
      "category": {
        "_ref": "<string>",
        "_ids": [
          "<string>"
        ]
      }
    }
  ],
  "categories": [
    {
      "id": "<string>",
      "name": "<string>"
    }
  ]
}