{
  "manageEntity": {
    "action": "Save",
    "entityId": "418429",
    "entityType": "Track",
    "nonce": "0xdb2a44ce6663434719e099f079f29692463c504cb4e12ede95db551ff568d684",
    "signature": "0x13de8b8a6879a711cbd847cfe9dfea358981f663878e57f79e123bb49ab326ee225aa59e229e1294420aafa8204a6998f4089eae8aec82b81b82c717d69384fb1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}