{
  "manageEntity": {
    "action": "Save",
    "entityId": "761087",
    "entityType": "Track",
    "nonce": "0x46d99d841171372c4f5fe3599f2144633fc367aec1497dd642fcf6e3c47f1915",
    "signature": "0x7240485ceafd4194efe1ee6753d0a204f817fcf5e62992f6d4d822df9b612f0d2938f71aa6f3e2dde588668229e53c2bc9cd0c10c6226d117474ece87c854c5b1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}