{
  "manageEntity": {
    "action": "Save",
    "entityId": "455297439",
    "entityType": "Track",
    "nonce": "0x71a5ee2669a9188f603a385eee4f368dc26ee8c6b255f2b8804b2eb90f02d119",
    "signature": "0x44b5ebc62b1509dbfadef88d62892f57b8daf591179e53dfaf60c3be852ef74e3211df9ee1e24f3f8672597e652266febd02376c38df18df0ba403fea00436ad1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}