get array contents from a list of objects and create a new one [duplicate]

How are you, I’ve been trying to find an answer for a while and without success.
I am trying to get the array of a series of objects and from here create a single list.
I think it’s easier to show it.
This is the json file to read:

  {
  "Mnix_Active": [
      {
      "area": "Citytes",
      "name": "Ridemk"
      },
      {
      "area": "City77",
      "name": "Delivery"
      }
  ],
  "Storm": [
      {
      "area": "City152",
      "name": "Rescue"
      },
      {
      "area": "City22",
      "name": "Resupply"
      }
  ],
  "Meganix": [
      {
      "area": "Park22",
      "name": "Ride"
      },
      {
      "area": "City25",
      "name": "Ride"
      }
  ]     
  
}

and get it like this::

    [
        {
        "area": "Citytes",
        "name": "Ridemk"
        },
        {
        "area": "City77",
        "name": "Delivery"
        },
        {
        "area": "City152",
        "name": "Rescue"
        },
        {
        "area": "City22",
        "name": "Resupply"
        },
        {
        "area": "Park22",
        "name": "Ride"
        },
        {
        "area": "City25",
        "name": "Ride"
        }     
    
    ]