{
  "manageEntity": {
    "action": "Save",
    "entityId": "8048330",
    "entityType": "Track",
    "nonce": "0x0340225422baeb20812f097a6bba1cdb9df39cbcfb47e1a62f36cf9e6fd4ac69",
    "signature": "0xfd9bb53c9a54ad3f6849c6e5f24b58493a0de1a845ea8f409486eafc685eae5030589d773b1a1a86e8a3ea733295d7892fadeed83bc5af42d2b899a18679a0e81c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}