After deploy aptos contract , I want to get the contract json format abi.
I found that the transaction payload , changes field can get json format abi.
Such as https://explorer.aptoslabs.com/txn/0x7bbb1d19c59ff863fd89176d8fcb2d60f0e43a9b6e22697587b9994aefae36f5/changes
But Not every deploy contract transaction contains the abi. If the contract has bean deployed and didn't change , the transaction cannot found the abi.
So is there any other way can get the contract json format abi ?, such as from the decode the bsc file ?