{
  "$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",
  "elmType": "button",
  "customRowAction": {
    "action": "copyFile",
    "actionParams": "='{\"destinationUrl\":\"' + @currentWeb + '/Shared Documents\"}'"
  },
  "attributes": {
    "class": "ms-fontColor-themePrimary ms-fontColor-themeDark--hover",
    "title": "Copy to Documents"
  },
  "style": {
    "border": "none",
    "background-color": "transparent",
    "cursor": "pointer"
  },
  "children": [
    {
      "elmType": "span",
      "attributes": {
        "iconName": "Copy",
        "class": "ms-font-xxl"
      }
    }
  ]
}