json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "NanoInteractive Adapter Params",
      "description": "A schema which validates params accepted by the NanoInteractive adapter",
      "type": "object",
      "properties": {
          "pid": {
              "type": "string",
              "description": "Placement idd"
          },
          "nq": {
              "type": "array",
              "items": {
                  "type": "string"
              },
              "description": "search queries"
          },
          "category": {
              "type": "string",
              "description": "IAB Category"
          },
          "subId": {
              "type": "string",
              "description": "any segment value provided by publisher"
          },
          "ref": {
              "type": "string",
              "description": "referer"
          }
      },
      "required": [
          "pid"
      ]
  }