{
  "manageEntity": {
    "action": "Save",
    "entityId": "1314262560",
    "entityType": "Track",
    "nonce": "0x5f1e10dba6b59fb08fc175db99f5f21f924ae48ae2c8ba790847c7a7dd617972",
    "signature": "0x32dcd624c7ee317ddaf5048ba648e35b5eac5047a8a2e8fd25c7052d16055bc33e3faf1c68afd45ee5c9e08cd8a5b26076df0badfb3d6330bb6bbafb7c530b7b1c",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}