diff --git a/package.yaml b/package.yaml
index a070828..2878a7a 100644
--- a/package.yaml
+++ b/package.yaml
@@ -22,6 +22,9 @@ description:         Please see the README on GitHub at <https://github.com/gith
 dependencies:
 - base >= 4.7 && < 5
 - tickLeiste
+- aeson
+- uuid
+- text
 
 library:
   source-dirs: src
diff --git a/src/Data/Aeson/TickLeiste.hs b/src/Data/Aeson/TickLeiste.hs
new file mode 100644
index 0000000..c9ca32d
--- /dev/null
+++ b/src/Data/Aeson/TickLeiste.hs
@@ -0,0 +1,46 @@
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE TemplateHaskell #-}
+
+module Data.Aeson.TickLeiste
+  ( KnownPlayer (..),
+    UnknownPlayer (..),
+    JSONRequest (..),
+    JSONEvent (..),
+  )
+where
+
+import Data.Aeson
+import Data.Aeson.TH
+import qualified Data.Text as T
+import Data.TickLeiste
+import qualified Data.UUID as U
+
+$(deriveJSON defaultOptions {sumEncoding = defaultTaggedObject {tagFieldName = "tickType", contentsFieldName = "tickValue"}} ''Tick)
+
+data KnownPlayer = KnownPlayer {kplayerUUID :: U.UUID, kplayerName :: Maybe T.Text}
+  deriving (Show)
+
+$(deriveJSON defaultOptions {fieldLabelModifier = drop 1} ''KnownPlayer)
+
+data UnknownPlayer = UnknownPlayer {uplayerName :: T.Text}
+  deriving (Show)
+
+$(deriveJSON defaultOptions {fieldLabelModifier = drop 1} ''UnknownPlayer)
+
+data JSONRequest
+  = SetPlayerTickR {sptRplayer :: KnownPlayer, sptRtick :: Tick}
+  | AddPladerTickR {aptRplayer :: UnknownPlayer, aptRtick :: Tick}
+  | InitializeTickLeisteR {itlRtickLeiste :: [(Tick, [UnknownPlayer])]}
+  | TickLeisteR
+  | ChangeNameR {cnaRplayer :: KnownPlayer}
+  deriving (Show)
+
+$(deriveJSON defaultOptions {sumEncoding = defaultTaggedObject {tagFieldName = "requestType"}, fieldLabelModifier = drop 4} ''JSONRequest)
+
+data JSONEvent
+  = SetPlayerTickE {sptEplayer :: KnownPlayer, sptEtick :: Tick}
+  | InitializeTickLeisteE {itlEtickLeiste :: [(Tick, [KnownPlayer])]}
+  | ChangeNameE {cnaEplayer :: KnownPlayer}
+  deriving (Show)
+
+$(deriveJSON defaultOptions {sumEncoding = defaultTaggedObject {tagFieldName = "eventType"}, fieldLabelModifier = drop 4} ''JSONEvent)
diff --git a/tickLeisteServer.cabal b/tickLeisteServer.cabal
index 02bad59..5650593 100644
--- a/tickLeisteServer.cabal
+++ b/tickLeisteServer.cabal
@@ -25,14 +25,18 @@ source-repository head
 
 library
   exposed-modules:
+      Data.Aeson.TickLeiste
       Lib
   other-modules:
       Paths_tickLeisteServer
   hs-source-dirs:
       src
   build-depends:
-      base >=4.7 && <5
+      aeson
+    , base >=4.7 && <5
+    , text
     , tickLeiste
+    , uuid
   default-language: Haskell2010
 
 executable tickLeisteServer
@@ -43,9 +47,12 @@ executable tickLeisteServer
       app
   ghc-options: -threaded -rtsopts -with-rtsopts=-N
   build-depends:
-      base >=4.7 && <5
+      aeson
+    , base >=4.7 && <5
+    , text
     , tickLeiste
     , tickLeisteServer
+    , uuid
   default-language: Haskell2010
 
 test-suite tickLeisteServer-test
@@ -57,7 +64,10 @@ test-suite tickLeisteServer-test
       test
   ghc-options: -threaded -rtsopts -with-rtsopts=-N
   build-depends:
-      base >=4.7 && <5
+      aeson
+    , base >=4.7 && <5
+    , text
     , tickLeiste
     , tickLeisteServer
+    , uuid
   default-language: Haskell2010