{
  "manageEntity": {
    "action": "Save",
    "entityId": "2071310819",
    "entityType": "Track",
    "nonce": "0x1d95221383bc5d6823fb61ef15c0a1a0ebc272a3eb96eefcdd0312b3ce5e2abc",
    "signature": "0x67e6bf4aa18e28c81f093020bdcf4bd51685be4279f07afa76c4981e9a5db24e71d94b6a179ff08072191f2e04c401403283f1ca420af415be071dfbf00e269e1c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}