What will be the structure representation of the following json data in golang?

{
  "devices": [
    {
      "id": 20081691,
      "targetIp": "10.1.1.1",
      "iops": "0.25 IOPS per GB",
      "capacity": 20,
      "allowedVirtualGuests": [
        {
          "Name": "akhil1"
        },
        {
          "Name": "akhil2"
        }
      ]
    }
  ]
}

How to write a structure representation of this JSON data so that I can add and delete devices to the list. I tried with the different structure representations but nothing is working. Below is one of the example I have tried with a similar kind of json data. I am not able to add new data to it. The structure representation and the way the append is done might be wrong here

package main
 
import (
    "encoding/json"
    "fmt"
)
 
type Person struct {
    ID        string   `json:"id,omitempty"`
    Firstname string   `json:"firstname,omitempty"`
    Lastname  string   `json:"lastname,omitempty"`
    Address   []Address `json:"address,omitempty"`
}
 
type Address[] struct {
    City  string `json:"city,omitempty"`
   
}
 

func main() {

var people []Person
people = append(people, Person{ID: "1", Firstname: "Nic", Lastname: "Raboy", Address: []Address{{City: "Dublin"},{ City: "CA"}}} )
b, err := json.Marshal(people)
    if err != nil {
        fmt.Println("json err:", err)
    }
    fmt.Println(string(b))
}

you can use struct tag like json:"id", try struct below:

type Data struct {
        Devices []struct {
                Id                   int    `json:"id"`
                IP                   string `json:"targetIp"`
                IOPS                 string `json:"iops"`
                Capacity             int    `json:"capacity"`
                AllowedVirtualGuests []struct {
                        Name string `json:"Name"`
                } `json:"allowedVirtualGuests"`
        } `json:"devices"`
}

It will be below. This was generated using the excellent JSON-to-GO tool:

type MyStruct struct {
	Devices []struct {
		ID                   int    `json:"id"`
		TargetIP             string `json:"targetIp"`
		Iops                 string `json:"iops"`
		Capacity             int    `json:"capacity"`
		AllowedVirtualGuests []struct {
			Name string `json:"Name"`
		}                           `json:"allowedVirtualGuests"`
	}                               `json:"devices"`
}

To simplify that though, you can break it into smaller structs for readability. An example is below:

package main

import "fmt"

type VirtualGuest struct {
	Name string `json:"Name"`
}

type Device struct {
	ID                   int            `json:"id"`
	TargetIP             string         `json:"targetIp"`
	Iops                 string         `json:"iops"`
	Capacity             int            `json:"capacity"`
	AllowedVirtualGuests []VirtualGuest `json:"allowedVirtualGuests"`
}

type MyStruct struct {
	Devices []Device `json:"devices"`
}

func main() {

	var myStruct MyStruct

	// Add a MyStruct
	myStruct.Devices = append(myStruct.Devices, Device{
		ID:1,
		TargetIP:"1.2.3.4",
		Iops:"iops",
		Capacity:1,
		AllowedVirtualGuests:[]VirtualGuest{
			VirtualGuest{
				Name:"guest 1",
			},
			VirtualGuest{
				Name:"guest 2",
			},
		},
	})

	fmt.Printf("MyStruct: %v\n", myStruct)
}