{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "4466944",
    "entityType": "Track",
    "nonce": "0x82f0e747440bc22ceb8544ef27f156a86adab0852d1f1ba602f4132d1417c332",
    "signature": "0xcf563f06181ef1051b6b8ad994a28f46b97227ff6f017572257be839b39a02cb63a7f9605c1bb14ee74859085c1361cb324c6bcb123f084844cda10fd9fd4c6f1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}