Importing a JSON response to MySQL in Laravel

I am using the API of a program to get data through Laravel's HTTP function. The request comes back in JSON format like this:

{
  "response": {
    "method": "12345",
    "result": {
      "calls": {
        "total_pages": "1",
        "total_items": "6",
        "call": [
          {
            "uniquevalue": "value",
            "key1": "value",
            "key2": "value",
            "key3": "value"
          },
          {
            "uniquevalue ": "value",
            "key1": "value",
            "key2": "value",
            "key3": "value"
          },
          {
            "uniquevalue ": "value",
            "key1": "value",
            "key2": "value",
            "key3": "value"
          }
        ],
        "items_per_page": "999",
        "page_number": "1"
      }
    }
  }
}

Select allOpen in new window

I want to take the data bolded above (each row under (response -> result-> calls -> call) and import them to a MySQL database. Normally, I would do this by doing a foreach loop, which may not be the right way. But in this case, I don't know how to do even that because I don't know how to access the nested json rows.
In summary, how can I get each of the "call" rows above into a database? Any advice is appreciated. Thank you.