{
  "manageEntity": {
    "action": "Save",
    "entityId": "1185884827",
    "entityType": "Track",
    "nonce": "0xcc00a31d88813555d8ebfc673efdc281c6bd25f9e87df762f5bd0f925eae5375",
    "signature": "0x0b87c3c0b39189159bccfcdc30e73b27881492423ea9cc4ac04c73682c8ddab57d2acff4dcde22abd4b9d8b0cf3ee53f125e7b3469ca42172609374ccbc4a1b01b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}