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EVENT_JSON:{"standard":"mb_market","version":"0.2.1","event":"nft_unlist","data":{"nft_contract_id":"metamask-nft.near","nft_token_id":"5625","nft_approval_id":3}} EVENT_JSON:{"standard":"mb_market","version":"0.2.1","event":"nft_list","data":{"kind":"simple","nft_contract_id":"metamask-nft.near","nft_token_id":"5625","nft_approval_id":4,"nft_owner_id":"velmost.near","currency":"near","price":"900000000000000000000000"}}