curl --request DELETE \
  --url https://api.jup.ag/prediction/v1/positions/{positionPubkey} \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "ownerPubkey": "<string>"
}
'

{
  "transaction": "<string>",
  "txMeta": {
    "blockhash": "<string>",
    "lastValidBlockHeight": 1
  },
  "externalOrderId": "<string>",
  "order": {
    "orderPubkey": "<string>",
    "orderAtaPubkey": "<string>",
    "userPubkey": "<string>",
    "marketId": "<string>",
    "marketIdHash": "<string>",
    "positionPubkey": "<string>",
    "isBuy": true,
    "isYes": true,
    "contracts": "<string>",
    "newContracts": "<string>",
    "maxBuyPriceUsd": "<string>",
    "minSellPriceUsd": "<string>",
    "externalOrderId": "<string>",
    "orderCostUsd": "<string>",
    "newAvgPriceUsd": "<string>",
    "newSizeUsd": "<string>",
    "newPayoutUsd": "<string>",
    "estimatedProtocolFeeUsd": "<string>",
    "estimatedVenueFeeUsd": "<string>",
    "estimatedTotalFeeUsd": "<string>",
    "contractsMicro": "<string>",
    "contractsDecimal": "<string>",
    "newContractsMicro": "<string>",
    "newContractsDecimal": "<string>",
    "payoutUsd": "<string>",
    "slippageBps": 1,
    "maxSlippageBps": 1
  },
  "requiredSigners": [
    "<string>"
  ]
}