Apply selected brush in a document

Photoshop
2

I think it might be one of these two:

{
   "_obj": "select",
   "_target": [
      {
         "_ref": "toolPreset",
         "_name": "Tool Preset Name"
      }
   ]
}

{
   "_obj": "select",
   "_target": [
      {
         "_ref": "brush",
         "_name": "Brush Name"
      }
   ]
}