{
  "manageEntity": {
    "action": "Save",
    "entityId": "147362",
    "entityType": "Track",
    "nonce": "0x93325a48a84941616e1f60378017b711b9f783106042d610d62524e5b25d6481",
    "signature": "0x654f5d55a0d417ae74604ebb704eb9595e0d202881d135ba054be8a5797481bb311a5bf8d6b311f5245a00b868b7217e53c4116be3ad90d05d46726719d9b1de1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}