React Native - createAsyncThunk with Axios

Question

I try to use 'redux toolkit' to create async function for my React Native app. below are my createAsyncThunk function:

export const signin = createAsyncThunk(
    "signin",
    async (dispatch, getState) =>{
    return await axios.post(localhost+'/api/user_auth/', {
                        email:'abc@example.com', 
                        password:'password'
                  }).then(res=> console.log(res.data))
    }
)


export const userSlice = createSlice({
  name: 'user',
  initialState: {
  user:{},
  status:null
  },
  extraReducers:{
    [signin.pending]: (state, action)=>{
        state.status = 'loading...'
    },
    [signin.fulfilled]: (state, action)=>{
        state.status = 'success'
        state.user = action.payload
    },
    [signin.rejected]: (state, action)=>{
        state.status = 'failed'
    },
  },
  reducers: {
  },
})

when running the function everything seems to work, the console.log inside the then() will return the correct data. But when I log out the state.user I will get:

{"status": "success", "user": {}}

1. How should I return the response data?
2. If I want only the specific part of the response data like response.data, how can I filter that to return to reducer?

Update01 I just test this:

export const signin = createAsyncThunk(
    "signin",
    async (dispatch, getState) =>{
    const res = await axios.post(localhost+'/api/user_auth/', {
                        email:'abc@example.com', 
                        password:'password'
                  })
    console.log( await res.data)
    return await res.json()//<-- give status "failed"
    }
)

And I when I logged state.user, I will get:

{"status": "failed", "user": {}}

It seems like the toolkit is very particular on the await format.