{
  "manageEntity": {
    "action": "Save",
    "entityId": "654581502",
    "entityType": "Track",
    "nonce": "0xb6f5e080c994208af1b011ba26ba461de70f6b060c48f5eafe9d00b6fc32aae6",
    "signature": "0x088e7d335dd64646020f7ddd56694976757509ef4d435f3b4c030dee924d2b556e40a85da296ad847760e819419469a84043c8167a8941ebf561b413b29b59171c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}