{
  "manageEntity": {
    "action": "Save",
    "entityId": "962563917",
    "entityType": "Track",
    "nonce": "0xa88a61683ac2799c6e3606b69a38705f12293d64576b7979b31ea92f669f316b",
    "signature": "0x204918c56b69bd995c2c0ecf5958829a5629e7810ea377c9182c9f22bb50263a18dbc83ec8fd2d1e14430f576f5b09d0e5f91f0e4a99d93557a4779aa617cff31c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}