{
  "manageEntity": {
    "action": "Save",
    "entityId": "41406012",
    "entityType": "Track",
    "nonce": "0x22417fb69f7d5b43a2e13e379f69e7bd1425452c231a9adc6466af1ad3097640",
    "signature": "0x1ee2f5b7c57c07b2c841350c195cce0201a09aaf2a8c10d995b08e18f97401a37bdf71feec7d7cd8401035bca112f6ba34e0a18458974b8655bd88c40102ae181b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}