{
  "manageEntity": {
    "action": "Save",
    "entityId": "1316965408",
    "entityType": "Track",
    "nonce": "0x3cbfafc46812464b30ac438e8f73ee9e59d8eaa03f1e760faf5fbba74251880d",
    "signature": "0xfaf1b59c15f2dd2dbd2c7807ca4c7f3c84077d00c37a1494e16a02a7ed7d309d525320a1c4bd75f925bd799cbf4bd64ef0559c06a77bba81ade1cebc2edf87661b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}