diff --git a/src/NixTree/App.hs b/src/NixTree/App.hs
index 87e3896..c0149fc 100644
--- a/src/NixTree/App.hs
+++ b/src/NixTree/App.hs
@@ -382,15 +382,19 @@ renderInfoPane env =
            in B.txt f B.<+> underlineWhen SortOrderAlphabetical (B.txt s),
           [ B.txt $ "NAR Size: " <> prettySize (spSize selected),
             underlineWhen SortOrderClosureSize . B.txt $ "Closure Size: " <> prettySize (psTotalSize $ spPayload selected),
-            underlineWhen SortOrderAddedSize . B.txt $ "Added Size: " <> prettySize (psAddedSize $ spPayload selected),
-            B.txt $
-              "Signatures: "
-                <> if null signatures
-                  then "✗"
-                  else (map (\s -> (fromMaybe "?" (viaNonEmpty head (T.splitOn ":" (T.pack s))))) signatures) & T.intercalate ", "
+            underlineWhen SortOrderAddedSize . B.txt $ "Added Size: " <> prettySize (psAddedSize $ spPayload selected)
           ]
             & intersperse (B.txt " | ")
             & B.hBox,
+          B.txt $
+            "Signatures: "
+              <> if null signatures
+                then "✗"
+                else
+                  ( signatures
+                      & map npsKeyName
+                      & T.intercalate ", "
+                  ),
           B.txt $
             if null immediateParents
               then "Immediate Parents: -"
diff --git a/src/NixTree/StorePath.hs b/src/NixTree/StorePath.hs
index aa05db3..670ba95 100644
--- a/src/NixTree/StorePath.hs
+++ b/src/NixTree/StorePath.hs
@@ -4,6 +4,7 @@ module NixTree.StorePath
     storeNameToText,
     storeNameToShortText,
     storeNameToSplitShortText,
+    NixPathSignature (..),
     StorePath (..),
     Installable (..),
     StoreEnv (..),
@@ -141,7 +142,7 @@ data StorePath s ref payload = StorePath
     spSize :: Int,
     spRefs :: [ref],
     spPayload :: payload,
-    spSignatures :: [String]
+    spSignatures :: [NixPathSignature]
   }
   deriving (Show, Eq, Ord, Functor, Generic)
 
@@ -375,9 +376,24 @@ data NixPathInfo = NixPathInfo
   { npiPath :: FilePath,
     npiNarSize :: Int,
     npiReferences :: [FilePath],
-    npiSignatures :: [String]
+    npiSignatures :: [NixPathSignature]
   }
 
+data NixPathSignature = NixPathSignature
+  { npsKeyName :: Text,
+    npsSignature :: Text
+  }
+  deriving (Show, Eq, Ord, NFData, Generic)
+
+instance FromJSON NixPathSignature where
+  parseJSON (String t) =
+    case T.splitOn ":" t of
+      [key, sig]
+        | not (T.null key) && not (T.null sig) ->
+            Just $ NixPathSignature key sig
+      _ -> fail "Expecting a string in the form of 'key:sig'."
+  parseJSON _ = fail "Expecting a string."
+
 data NixPathInfoResult
   = NixPathInfoValid NixPathInfo
   | NixPathInfoInvalid FilePath