{
  "directive": {
    "header": {
      "namespace": "Alexa.ChannelController",
      "name": "ChangeChannel",
      "messageId": "Unique version 4 UUID",
      "correlationToken": "Opaque correlation token",
      "payloadVersion": "3"
    },
    "endpoint": {
      "scope": {
        "type": "BearerToken",
        "token": "OAuth2.0 bearer token"
      },
      "endpointId": "Endpoint ID",
      "cookie": {}
    },
    "payload": {
      "channel": {
        "number": "9",
        "callSign": "KCTS-TV",
        "affiliateCallSign": "KCTS",
        "uri": "channel uri"
      },
      "channelMetadata": {
        "name": "Alternate channel name",
        "image": "url for image"
      }
    }
  }
}