List all your current channel catalogs configured to use legacy tracking format

{
  "type": "object",
  "description": "This is the index of the channel catalog API",
  "properties": {
    "channelCatalogs": {
      "type": "object",
      "description": "The channel catalog list. The key is the channel catalog identifier"
    },
    "links": {
      "type": "object",
      "description": "Indicates how global actions you can do like how to create a channel catalog, exclusion filter operators, etc...\n",
      "properties": {
        "self": {
          "type": "object"
        }
      }
    }
  }
}