{
  "manageEntity": {
    "action": "Save",
    "entityId": "2127494476",
    "entityType": "Track",
    "nonce": "0xdde1bc1bf26bdc945f32e4cb6d7c7d430f23acef871ab76e43affc8b93aa6e98",
    "signature": "0x08a61626c6ea2cd9adf24b2f2c83ba68341307224785f846e38a5a98fd86f4c919325ac2802c388dbee7918e667bd1717858ccef35d9c347f72f0f3234555e831b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}