Executing a swap with a swap message?

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I'm using secret-sdk python to submit a swap to secret swap.

I can't seem to submit a valid transaction, and I think it's that the message is incorrect. I am using the example syntax given in your GitHub, but it isn't working for me.

I want to trade sSCRT for sETH, here is the message I have written by your specifications:

swap_msg = {
                "swap": {
                    "offer_asset": {
                        "info": {
                            "native_token": {
                                "denom": "sSCRT"
                            }
                        },
                        "amount": 1
                    }
                }
            }

then I package it into a transaction:

#get message into a send message format
send_msg = secret.wasm.contract_execute_msg(wallet.key.acc_address,contract_address,swap_msg)

#get message into transaction format
tx = wallet.create_and_sign_tx(
        msgs=[send_msg],
        memo="",
        fee=StdFee(50000, "5000uscrt")
    )

#broadcast to chain
result = secret.tx.broadcast(tx)
print(result)

However, this transaction doesn't ever end up going through successfully.

I assume that the message I am submitting is incorrect; however, it's impossible to know how it should look because everything is hashed.

Here is my full code if it's of interest:

#import required dependencies
from secret_sdk.client.lcd import LCDClient
from secret_sdk.key.mnemonic import MnemonicKey
from secret_sdk.core.auth import StdFee
from secret_sdk.core.bank import MsgSend

#endpoints
node_rest_endpoint = "http://api.scrt.network/"
chain_id = "secret-4"

#create wallet from mnemonic
MNEMONIC = "my mnemonic"
secret = LCDClient(chain_id=chain_id, url=node_rest_endpoint)
mk = MnemonicKey(mnemonic=MNEMONIC) 
wallet = secret.wallet(mk)

#point to sSCRT contract address
contract_address = "secret1k0jntykt7e4g3y88ltc60czgjuqdy4c9e8fzek"

#create a message for secretswap


swap_msg = {
                "swap": {
                    "offer_asset": {
                        "info": {
                            "native_token": {
                                "denom": "sSCRT"
                            }
                        },
                        "amount": 1
                    }
                }
            }

#get message into a send message format
send_msg = secret.wasm.contract_execute_msg(wallet.key.acc_address,contract_address,swap_msg)

#get message into transaction format
tx = wallet.create_and_sign_tx(
        msgs=[send_msg],
        memo="",
        fee=StdFee(50000, "5000uscrt")
    )

#broadcast to chain
result = secret.tx.broadcast(tx)
print(result)