diff --git a/include/Redmine/Object.hpp b/include/Redmine/Object.hpp
new file mode 100644
index 0000000..7e28710
--- /dev/null
+++ b/include/Redmine/Object.hpp
@@ -0,0 +1,87 @@
+#pragma once
+/* 
+* Copyright (C) 2024 Dominik Meyer
+*  
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*  
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*  
+* You should have received a copy of the GNU General Public License
+* along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include "nlohmann/json_fwd.hpp"
+#include <nlohmann/json.hpp>
+
+
+/**
+* @brief The main namespace of this library for Redmine related datatypes, classes, and functions
+* 
+*/
+namespace Redmine 
+{
+
+    /**
+     * @brief interface class for all redmine objects
+     * 
+     * All redmine objects are expected to use a json object as their main 
+     * data store. This supports easy working with the json base api calls.
+     *
+     */
+    class Object 
+    {
+        protected:
+
+            /**
+             * @brief verifies the validity of the provided json data
+             *
+             * This method has to check each value within the json data
+             * if it is valid for the object. It also has to enforce 
+             * mandatory attributes.
+             *
+             * The method should throw exceptions if a non recoverable
+             * problem is found!
+             * 
+             */
+            virtual void _verify(const nlohmann::json &data) = 0;
+        
+            void _baseVerify(const nlohmann::json &data, const std::string &objectName);
+
+        public:
+            
+            /**
+             * @brief set the internal data of the object
+             *
+             * This method has to set all valued of the object even if some already have been
+             * set but are missing in the new data.
+             *
+             * It is *expected* that you reset all old data 
+             *
+             * @param data - the json data holding the objects new information
+             */
+            virtual void set(const nlohmann::json &data) = 0;
+
+            /**
+             * @brief returns the currently set data of the object as a json object
+             * 
+             * @return nlohmann::json - the json object holding all object information
+             */
+            virtual nlohmann::json get() const = 0;
+            
+            /**
+             * @brief return a string representation of the object
+             * 
+             * @return std::string 
+             */
+            virtual std::string to_string() const = 0;
+            
+
+    }; // class Object
+
+}; // namespace Redmine
\ No newline at end of file
diff --git a/include/Redmine/User.hpp b/include/Redmine/User.hpp
new file mode 100644
index 0000000..dfad989
--- /dev/null
+++ b/include/Redmine/User.hpp
@@ -0,0 +1,154 @@
+#pragma once
+/* 
+* Copyright (C) 2024 Dominik Meyer
+*  
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*  
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*  
+* You should have received a copy of the GNU General Public License
+* along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include "nlohmann/json_fwd.hpp"
+#include <cstdint>
+#include <nlohmann/json.hpp>
+#include <Redmine/Object.hpp>
+#include <string>
+
+/**
+ * @brief The main namespace of this library for Redmine related datatypes, classes, and functions
+ * 
+ */
+namespace Redmine 
+{
+
+    /**
+     * @brief This class represents a user within the redmine server.
+     * 
+     */
+    class User : public Redmine::Object
+    {
+        private:
+
+            /// the objects data store
+            nlohmann::json data_;
+            
+            /**
+             * @brief verify user data
+             * 
+             * @param data - the json object containing the user data
+             */
+            void _verify(const nlohmann::json &data);
+
+            
+
+        public:
+
+            /**
+             * @brief Constructor creating a UserInfo object from json data
+             * 
+             * @param userinfo 
+             */
+            explicit User(const nlohmann::json &user);
+
+            /**
+             * @brief set the user object from a json object
+             * 
+             * @param data 
+             */
+            void set(const nlohmann::json &data);
+
+            /**
+             * @brief return a json object from the user object
+             * 
+             * @return nlohmann::json 
+             */
+            nlohmann::json get() const;
+            
+            /**
+             * @brief Get the Full Name of the user
+             * 
+             * @return std::string 
+             */
+            std::string getFullName() const; 
+
+            /**
+             * @brief Get the First Name of the user
+             * 
+             * @return std::string 
+             */
+            std::string getFirstName() const;
+
+            /**
+             * @brief Get the Last Name of the user
+             * 
+             * @return std::string 
+             */
+            std::string getLastName() const;
+
+            /**
+             * @brief Get the Email address of the user
+             * 
+             * @return std::string 
+             */
+            std::string getEmail() const;
+
+            /**
+             * @brief check if the user is an admin
+             * 
+             * @return true 
+             * @return false 
+             */
+            bool isAdmin() const; 
+
+            /**
+             * @brief Get the url of the avatar image of the user
+             * 
+             * @return std::string 
+             */
+            std::string getAvatarURL() const;
+
+            /**
+             * @brief convert the user object to a string
+             * 
+             * @return std::string 
+             */
+            std::string to_string() const;
+
+            /**
+             * @brief return the user id 
+             * 
+             * @return std::uint32_t 
+             */
+            std::uint32_t getId() const;
+
+            /**
+             * @brief Get the login/account of the user
+             * 
+             * @return std::string 
+             */
+            std::string getLogin() const;
+            
+            /**
+             * @brief Set the First Name of the user object
+             *
+             * *Remember:* you are only updating the local object!
+             *
+             * To change something on the server to have to call the appropriate API method.
+             * 
+             * @param firstname  - the new firstname of the user
+             */
+            void setFirstName(const std::string &firstname);
+
+
+    }; // class User
+
+
+}; // namespace Redmine
\ No newline at end of file
diff --git a/src/Redmine/Object.cpp b/src/Redmine/Object.cpp
new file mode 100644
index 0000000..9a83659
--- /dev/null
+++ b/src/Redmine/Object.cpp
@@ -0,0 +1,46 @@
+/* 
+* Copyright (C) 2024 Dominik Meyer
+*  
+* This program is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*  
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*  
+* You should have received a copy of the GNU General Public License
+* along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+#include <Redmine/Object.hpp>
+#define LOGURU_WITH_STREAMS 1
+#include <loguru.hpp>
+
+void Redmine::Object::_baseVerify(const nlohmann::json &data, const std::string &objectName)
+{
+    if (data.empty())
+    {
+        DLOG_S(ERROR) << "provided data is empty";
+        throw std::invalid_argument("provided data is empty");
+    }
+
+    if (!data.is_object())
+    {
+        DLOG_S(ERROR) << "provided data is not a json object/hash";
+        throw std::invalid_argument("provided data is not a json objects/hash");
+    }
+
+    if (!data.contains(objectName))
+    {
+        DLOG_S(ERROR) << "provided data does not contain object information (" << objectName << ")";
+        throw std::invalid_argument("provided data does not contain object information (" + objectName + ")");
+    }
+
+    if (data[objectName].empty())
+    {
+        DLOG_S(ERROR) << "provided object information is empty";
+        throw std::invalid_argument("provided object information is empty");
+    }
+}
\ No newline at end of file
diff --git a/src/Redmine/User.cpp b/src/Redmine/User.cpp
new file mode 100644
index 0000000..a1dad86
--- /dev/null
+++ b/src/Redmine/User.cpp
@@ -0,0 +1,85 @@
+
+#include "nlohmann/json_fwd.hpp"
+#include <Redmine/User.hpp>
+#include <cstdint>
+#include <stdexcept>
+#include <string>
+#define LOGURU_WITH_STREAMS 1
+#include <loguru.hpp>
+
+void Redmine::User::set(const nlohmann::json &data)
+{
+    _verify(data);
+    data_=data;
+}
+
+nlohmann::json Redmine::User::get() const 
+{
+    return data_;
+}
+
+void Redmine::User::_verify(const nlohmann::json &data)
+{
+    
+    _baseVerify(data, "user");
+
+    nlohmann::json attributes = data["user"];
+
+
+}
+
+Redmine::User::User(const nlohmann::json &user) : Redmine::Object()
+{
+    set(user);
+}
+
+
+std::string Redmine::User::getFullName() const
+{
+    return data_["user"]["firstname"].get<std::string>() + " " + data_["user"]["lastname"].get<std::string>();
+}
+
+std::string Redmine::User::getFirstName() const
+{
+    return data_["user"]["firstname"].get<std::string>();
+}
+
+std::string Redmine::User::getLastName() const
+{
+    return data_["user"]["lastname"].get<std::string>();
+}
+
+std::string Redmine::User::getEmail() const 
+{
+    return data_["user"]["mail"].get<std::string>();
+}
+
+bool Redmine::User::isAdmin() const 
+{
+    return data_["user"]["admin"].get<bool>() == true;
+}
+
+std::string Redmine::User::getAvatarURL() const 
+{
+    return data_["user"]["avatar_url"].get<std::string>();
+}
+
+std::string Redmine::User::to_string() const 
+{
+    return data_["user"].dump(2);
+}
+
+std::uint32_t Redmine::User::getId() const 
+{
+    return data_["user"]["id"].get<std::uint32_t>();
+}
+
+std::string Redmine::User::getLogin() const 
+{
+    return data_["user"]["login"].get<std::string>();
+}
+
+void Redmine::User::setFirstName(const std::string &firstname)
+{
+    data_["user"]["firstname"]=firstname;
+}
\ No newline at end of file