{"chainId":"0x472","chainName":"AmStar Testnet","nativeCurrency":{"name":"SINSO","symbol":"SINSO","decimals":18},"rpcUrls":["https://testnet-rpc.amstarscan.com"],"blockExplorerUrls":["https://testnet.amstarscan.com"],"iconUrls":["ipfs://Qmd4TMQdnYxaUZqnVddh5S37NGH72g2kkK38ccCEgdZz1C"]}