fix transaction input

apps/explorer/lib/explorer/chain/data.ex

@@ -7,6 +7,7 @@ defmodule Explorer.Chain.Data do
   """
 
   alias Explorer.Chain.Data
+  alias Poison.Encoder.BitString
 
   @behaviour Ecto.Type
 
@@ -380,4 +381,22 @@ defmodule Explorer.Chain.Data do
       @for.to_string(data)
     end
   end
+
+  defimpl Poison.Encoder do
+    def encode(data, options) do
+      data
+      |> to_string()
+      |> BitString.encode(options)
+    end
+  end
+
+  defimpl Jason.Encoder do
+    alias Jason.Encode
+
+    def encode(data, opts) do
+      data
+      |> to_string()
+      |> Encode.string(opts)
+    end
+  end
 end

apps/explorer/test/explorer/chain/transaction_test.exs

@@ -286,4 +286,18 @@ defmodule Explorer.Chain.TransactionTest do
       assert Transaction.decoded_input_data(transaction) == {:ok, "60fe47b1", "set(uint256 x)", [{"x", "uint256", 10}]}
     end
   end
+
+  describe "Poison.encode!/1" do
+    test "encodes transaction input" do
+      assert %{
+               insert(:transaction)
+               | input: %Explorer.Chain.Data{
+                   bytes:
+                     <<169, 5, 156, 187, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 193, 108, 45, 196, 42, 228, 149, 239, 119,
+                       191, 128, 248>>
+                 }
+             }
+             |> Poison.encode!()
+    end
+  end
 end