Edit 
				
					{
    "id": "_request_id_",
    "method": "cloud.controller_subscribe_abstracts",
    "api": 1,
    "params": {
      "abstracts": [
         {
            "abstract_uuid": "1234-abcd-...",
            "device_id": "72613916",
            "mappings": [
              {
               "capability": "power",
               "variable": "status",
               "item_id": "32829327",
               "value": 1
              },
              {
               "capability": "indicator",
               "variable": "status",
               "item_id": "36281629",
               "value": "test-string"
              }
            ]
         },
         ...
      ]
   }
}
Edit 
				
					{
    "error": null,
    "id": "_ID_",
    "method": "cloud.controller_subscribe_abstracts",
    "result": {},
}

The result of that call will be an abstract subscription that informs firmware about cloud Abstract object changes via command.