{
  "manageEntity": {
    "action": "Save",
    "entityId": "1024790272",
    "entityType": "Track",
    "nonce": "0x36c345d7b9f41b323a4a6f569fc042567875231cab9c6e5e5de9f2c227a4c729",
    "signature": "0xa82a8a2ed46ed078a2afc8ca716346c8a55b233333e8a9cf1a6165d686ac68053dae49e2d05a47208d40d716d86a3e4dbe21b7e57a778794f58f161468b4867b1c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}