curl --request POST \
  --url https://api.interchange.io/api/v2/storefront/signals/discover \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "agentId": "<string>",
  "signalSpec": "<string>",
  "signalIds": [
    "<string>"
  ],
  "limit": 20,
  "offset": 0
}
'

{
  "agentResults": [
    {
      "agentId": "<string>",
      "agentName": "<string>",
      "success": true,
      "signalCount": 0,
      "error": "<string>"
    }
  ],
  "signals": [
    {
      "signalId": "<string>",
      "name": "<string>",
      "description": "<string>",
      "dataProvider": "<string>",
      "coveragePercentage": 123,
      "access": [
        {
          "seatId": 123,
          "visibility": "<string>",
          "price": {
            "pricing_option_id": "<string>",
            "pricing_model": "cpm",
            "currency": "<string>",
            "fixed_price": 1,
            "floor_price": 1,
            "max_bid": true,
            "price_guidance": {
              "p25": 1,
              "p50": 1,
              "p75": 1,
              "p90": 1
            },
            "min_spend_per_package": 1,
            "price_breakdown": {
              "list_price": 123,
              "adjustments": [
                {}
              ]
            },
            "eligible_adjustments": [
              "fee"
            ]
          }
        }
      ],
      "regions": [],
      "keyType": [],
      "metadata": {}
    }
  ],
  "total": 4503599627370495
}