{
  "manageEntity": {
    "action": "Save",
    "entityId": "1724398876",
    "entityType": "Track",
    "nonce": "0x35046364badf1b8fe161632d56d78a69b7a7762ee4067e22c267fc6e7bf27629",
    "signature": "0xb1a4d92e24bea165830d0f484ea29835c2b0257fb95481065a6b7f471a333f7c6f7288800d83884be601f5b79e54172a0cc8668d6cb42099a9c87811b317cc3b1c",
    "signer": "0xA66d5981794A5e084FBD9adBFF28F465924fb9a9",
    "userId": "980224167"
  }
}