{
   "domain" : {
      "chainId" : 1,
      "name" : "Exchange",
      "verifyingContract" : "0x9757f2d2b135150bbeb65308d4a91804107cd8d6",
      "version" : "2"
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      "dataType" : "0x23d235ef",
      "end" : 0,
      "makeAsset" : {
         "assetType" : {
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            "data" : "0x000000000000000000000000495f947276749ce646f68ac8c248420045cb7b5ebdf2657ffc1fadfd73cf0a8cde95d50b62d3df8c000000000000070000000032"
         },
         "value" : "1"
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      "maker" : "0x112f0732e59e7600768dfc35ba744b89f2356cd8",
      "salt" : "0xdbf0f98bc1746711579dcce549a4cc4e866fb71bf2e185bfefbb7d32f325972e",
      "start" : 0,
      "takeAsset" : {
         "assetType" : {
            "assetClass" : "0xaaaebeba",
            "data" : "0x"
         },
         "value" : "2000000000000000000"
      },
      "taker" : "0x0000000000000000000000000000000000000000"
   },
   "primaryType" : "Order",
   "types" : {
      "Asset" : [
         {
            "name" : "assetType",
            "type" : "AssetType"
         },
         {
            "name" : "value",
            "type" : "uint256"
         }
      ],
      "AssetType" : [
         {
            "name" : "assetClass",
            "type" : "bytes4"
         },
         {
            "name" : "data",
            "type" : "bytes"
         }
      ],
      "EIP712Domain" : [
         {
            "name" : "name",
            "type" : "string"
         },
         {
            "name" : "version",
            "type" : "string"
         },
         {
            "name" : "chainId",
            "type" : "uint256"
         },
         {
            "name" : "verifyingContract",
            "type" : "address"
         }
      ],
      "Order" : [
         {
            "name" : "maker",
            "type" : "address"
         },
         {
            "name" : "makeAsset",
            "type" : "Asset"
         },
         {
            "name" : "taker",
            "type" : "address"
         },
         {
            "name" : "takeAsset",
            "type" : "Asset"
         },
         {
            "name" : "salt",
            "type" : "uint256"
         },
         {
            "name" : "start",
            "type" : "uint256"
         },
         {
            "name" : "end",
            "type" : "uint256"
         },
         {
            "name" : "dataType",
            "type" : "bytes4"
         },
         {
            "name" : "data",
            "type" : "bytes"
         }
      ]
   }
}