How to convert object{} value to array[] value

enter image description here In Redux I'm receiving an object value instead of array value. I'm using axios to get the values. It's normal but my state is on an array type. Are there any ways to convert it?

{posts: { items: [ ["userId": 1, "id": 1, "title": "dsdsd" , "body" : "sdsda" ], [], [], [] ] } } - existing array

 { "title" : "dsds", "body" : "ssds", "id" : 101} - new object that have to add to the array

So entire application crashing because of this. I think can't add an object to an array. The array has map function. Anyone can tell me a solution.