Update nested state in reducer

I am trying to update nested data in my reducer. Using the following action, I am returning an array map in my reducer. However my state doesn't change:

case "SUBMIT_ANSWER":
        const { current, results, completed } = action.data;
        return state.map(video =>
            video.id === action.id
                ? { ...video, current, results, completed }
                : video
        );

Action:

{
   type: "SUBMIT_ANSWER", data: {…}}
   data:
   completed: false
   current: 1
   id: 142
   results: {correctAnswers: 1, score: 5}
}

Data that needs updating:

{ 
   videos: [{
    bookMarked: false
    completed: false
    correctScore: 5
    current: 0
    description: "<p>Lorem ipsum dolor sit amet</p>↵"
    iconPath: "require('../assets/images/venepuncture.png')"
    id: 142
    preview: "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut"
    questions: (15) [{…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}]
    results: {score: 0, correctAnswers: 0}
    title: "Venepuncture"
    totalScore: 50
    youtubeVideo: "cxcxcx"
}
......
]}