{
  "manageEntity": {
    "action": "Save",
    "entityId": "671992765",
    "entityType": "Track",
    "nonce": "0x79ce7bf23e33dc117dec37f8703409a79bacd14b2d3df6f80fe1e329196eb4cc",
    "signature": "0x31ec949925de84bfe767d63df030d37a17648c47cec42c5eec294e197d1f0ea001f87e47ff95eed1dc8938eedcc2a6873e2355cff91ba6cb77505d93261b74401b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}