{
  "manageEntity": {
    "action": "Save",
    "entityId": "924022",
    "entityType": "Track",
    "nonce": "0x7929c1ab97afd885caa31272d25967188745e8d35c76e3e38f1ce6889ad4618e",
    "signature": "0xd82037d141f380cfebae9f081872d6766f08931702e8102ff8b34c51cdd3c117341eb3c3fdfeb52a2322acb6bef62f27d02816b96db4f060f8acb63ba33af0e41c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}