{
  "manageEntity": {
    "action": "Save",
    "entityId": "1829886951",
    "entityType": "Track",
    "nonce": "0x765273ad355974a937f5b8f6da10adfd7f7d2c22437a3dc3dead37e5cbee7144",
    "signature": "0xf08fcd05380c2c7f1c322b5b934ce4da0e53a87bfaf884b86937c74715302071587bf36d8d080b092da488b4822c06e244bed11e66e3387c41714b3b0e9ad1f41c",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}