{
  "manageEntity": {
    "action": "Save",
    "entityId": "1466177162",
    "entityType": "Track",
    "nonce": "0x239ff4afcedad60df3c9736fb72f6677f33ad73b8ec263a2d316d04997cd7691",
    "signature": "0x102be97ca34a034549392c1c5c19508043c4e9b7738871a612a6bde099c7aa747250427c248f421b3ca1a42073ed9ad5f85fccbedd0267674a6ba172a3bb3fbc1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}