{
  "manageEntity": {
    "action": "Save",
    "entityId": "1547053402",
    "entityType": "Track",
    "nonce": "0x5f1adbe9e76cf665e0e9cebfcdd9bbebfe908ba494e30c015f4c77efb585e491",
    "signature": "0x20b31848ba31613c8158e6d6c56d3cac64d48ac745d367e2d3c7bf087ee6ce2a580dd83cd66bf70dc02ee122065bfbedabcf1ccea3212524ae9acdb19e10f2531c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}