karabiner-elements-switch-at-double-quote

{
  "title": "Exchange numbers and symbols",
  "rules": [
    {
      "description": "Switch @ and double quote symbols",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "2",
            "modifiers": {
              "mandatory": [
                "left_shift"
              ],
              "optional": [
                "caps_lock"
              ]
            }
          },
          "to": [
            {
              "key_code": "quote",
              "modifiers": [
                "left_shift"
              ]
            }
          ]
        },
        {
          "type": "basic",
          "from": {
            "key_code": "quote",
            "modifiers": {
              "mandatory": [
                "left_shift"
              ],
              "optional": [
                "caps_lock"
              ]
            }
          },
          "to": [
            {
              "key_code": "2",
              "modifiers": [
                "left_shift"
              ]
            }
          ]
        },
        {
          "type": "basic",
          "from": {
            "key_code": "2",
            "modifiers": {
              "mandatory": [
                "right_shift"
              ],
              "optional": [
                "caps_lock"
              ]
            }
          },
          "to": [
            {
              "key_code": "quote",
              "modifiers": [
                "left_shift"
              ]
            }
          ]
        },
        {
          "type": "basic",
          "from": {
            "key_code": "quote",
            "modifiers": {
              "mandatory": [
                "right_shift"
              ],
              "optional": [
                "caps_lock"
              ]
            }
          },
          "to": [
            {
              "key_code": "2",
              "modifiers": [
                "left_shift"
              ]
            }
          ]
        }  
      ]
    }
  ]
}