json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "Admixer Adapter Params",
      "description": "A schema which validates params accepted by the Admixer adapter",
      "type": "object",
      "properties": {
          "zone": {
              "type": "string",
              "description": "Zone ID.",
              "pattern": "^([a-fA-F\\d\\-]{36})$"
          },
          "customFloor": {
              "type": "number",
              "description": "The minimum CPM price in USD.",
              "minimum": 0
          },
          "customParams": {
              "type": "object",
              "description": "User-defined targeting key-value pairs."
          }
      },
      "required": [
          "zone"
      ]
  }