Vuex – passing multiple parameters to mutation

I am trying to authenticate a user using vuejs and laravel’s passport.

I am not able to figure out how to send multiple parameters to the vuex mutation via an action.

– store –

export default new Vuex.Store({
  state: {
    isAuth: !!localStorage.getItem('token')
  },
  getters: {
    isLoggedIn(state) {
      return state.isAuth
    }
  },
  mutations: {
    authenticate(token, expiration) {
      localStorage.setItem('token', token)
      localStorage.setItem('expiration', expiration)
    }
  },
  actions: {
    authenticate: ({
      commit
    }, token, expiration) => commit('authenticate', token, expiration)
  }
})

– login method –

login() {
  var data = {
    client_id: 2,
    client_secret: '**************************',
    grant_type: 'password',
    username: this.email,
    password: this.password
  }
  // send data
  this.$http.post('oauth/token', data)
    .then(response => {
      // send the parameters to the action
      this.$store.dispatch({
        type: 'authenticate',
        token: response.body.access_token,
        expiration: response.body.expires_in + Date.now()
      })
    })
}

I would be very thankful for any kind of help!