{
  "manageEntity": {
    "action": "Save",
    "entityId": "1526669052",
    "entityType": "Track",
    "nonce": "0xd5026eb14c4613804213ed87fdc76362460be7533ed154c544cd8e8e6bd8e604",
    "signature": "0x4d326527565435b4b6558e6df11e7d21318f398549b19d9afe14569af21461ee7f042adfcda8aef8a5a59637e34e00f6b53698a9c2887406903726a0b631abfb1b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}