{"p": "can-20", "op": "mint", "tick": "can", "amt": "1000", "rows": [{"df": "qa", "content": [{"q": "How to operate MintPaymentRules in a blockchain?", "a": "Define Mint Payment Rules:  Firstly, define the mint payment rules in the smart contract of the blockchain, which usually include the amount, frequency, and fees of minting."}]}]}