{
  "manageEntity": {
    "action": "Save",
    "entityId": "2048416934",
    "entityType": "Track",
    "nonce": "0x3b831bd0734925dda9d8e9b052296d66aae9bdb2aba122d308d07ee30d5feee7",
    "signature": "0xf0ef6c6c7fd1f95a541f75607ccc27a6c66a364f2308e9c220923919d93fe79d1543a3d4b4e0a05a1340bc1ad8b92a6b43a1336ff37c85f1e49d632870ddfeab1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}