Runtime.CallArgument

{
  "id": "CallArgument",
  "type": "object",
  "description": "Represents function call argument. Either remote object id objectId, primitive value, unserializable primitive value or neither of (for undefined) them should be specified.",
  "properties": [
    {
      "name": "value",
      "type": "any",
      "optional": true,
      "description": "Primitive value or serializable javascript object."
    },
    {
      "name": "unserializableValue",
      "$ref": "UnserializableValue",
      "optional": true,
      "description": "Primitive value which can not be JSON-stringified."
    },
    {
      "name": "objectId",
      "$ref": "RemoteObjectId",
      "optional": true,
      "description": "Remote object handle."
    }
  ]
}