- method: This must be "buy”.
- amountNQT: The amount to buy NFT.
- arg1: The ID of NFT. You can get NFT ID by calling "Get NFT By URI" API.
- contractName: The created smart contract name. For example: "PFT".
- secretPhrase: The passphrase of NFT buyer.
- feeNQT: This must be "0".
- deadline: Transaction confirmation deadline. Suggested value is 1440.
-->You need to wait 2 blocks, NFT will be purchased successfully.