json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "SomoAudience Adapter Params",
      "description": "A schema which validates params accepted by the SomoAudience adapter",
      "type": "object",
      "properties": {
          "placement_hash": {
              "type": "string",
              "description": "A hash defining the placement selling the impression"
          },
          "bid_floor": {
              "type": "number",
              "description": "Bid Floor for Impression",
              "minimum": 0
          }
      },
      "required": [
          "placement_hash"
      ]
  }