{
  "manageEntity": {
    "action": "Save",
    "entityId": "1755131005",
    "entityType": "Track",
    "nonce": "0x254a94a63a18f408e5301877035515a19a38d4cbc1da2b07d25c9adf8b2a0f4d",
    "signature": "0xa23b6ec6ac8d07586c38ea23e9824d32de605b922ef8500f794bdc3c52219b7a5af0ffce911d03e2742fdbe268f4fe2b5abd9debe266d838742cbce90958c4b91c",
    "signer": "0xAf1f176E32866fb97d822F6f5222061aF11ef652",
    "userId": "954117045"
  }
}