HMveH5YM8nUhJ6vCHCymDiEj6LS3ooSdwBS7ckxhi6AV
{"type":"add_market_data","params":{"owner_id":"09af97bf2a0471e04993952bc75eeb907eb538211a12d2a73e17e3bd5f1d98a3","approval_id":12,"nft_contract_id":"mrbrownproject.near","token_id":"3515","ft_token_id":"near","price":"4500000000000000000000000","started_at":null,"ended_at":null,"end_price":null,"is_auction":null,"transaction_fee":"200"}}