VUEJS + VUEX State reset everytime dispatch action - vue.js

Question

Everytime i dispatch action in vuex it remove my old state of users and add dispatch actions to playlist. I don't know what is problem so sharing screenshot you may understand in image what i am trying to say.
Thing is when application start it works fine with default values but when i add dispatch with some button or event then it remove user state object from vuex but keep playlist with new item in it. I know when dispatch playlist refresh vuex object but how to keep user object same time ?
This is action i added and works fine but i have to do this every time i add something or if other actions then i have to apply same thing.
Any idea i don't have to put user dispatch every time ?
addSongToList() {
playlist.dispatch('addSong', { title: "Beside Me",
mp3: "http://dl.jatt.link/lq.jatt.link/cdn8/1a40cff114c5ee39b75dd3813c3f29dd/cdlzv/Ni%20Mainu-(Mr-Jatt.com).mp3",
});
store.dispatch('updateUser', this.getUser );
}
Thanks
This is my playlist.js store file :
import Vuex from 'vuex'
let state = {
playerList: []
};
let getters = {
getPlaylist: state => {
return state.playerList
}
};
let actions = {
addSong: ({commit}, song) => {
commit('ADD_SONG_TO_PLAYLIST', song)
}
};
let mutations = {
ADD_SONG_TO_PLAYLIST(state, song) {
state.playerList.push(song)
}
};
let playlist = new Vuex.Store({
state,
getters,
mutations,
actions,
});
global.playlist = playlist;
export default playlist
This is user.js
import Vuex from 'vuex'
import playlist from './playlist'
let state = {
user: {}
};
let getters = {
getUser: state => {
return state.user
}
};
let actions = {
updateUser: ({commit}, user) => {
commit('ADD_USER', user)
},
deleteUser: ({commit}) => {
commit('DELETE_USER')
}
};
let mutations = {
ADD_USER(state, user) {
state.user = user
},
DELETE_USER(state) {
state.user = null
}
};
export default new Vuex.Store({
state,
getters,
actions,
modules: {
playlist
},
mutations,
})