query TswapBuySingleListingTx(
  $buyer: String!
  $maxPrice: Decimal!
  $mint: String!
  $owner: String!
) {
  tswapBuySingleListingTx(
    buyer: $buyer
    maxPrice: $maxPrice
    mint: $mint
    owner: $owner
  ) {
    txs {
      lastValidBlockHeight
      tx
      txV0
    }
  }
}