{
  "manageEntity": {
    "action": "Save",
    "entityId": "98000653",
    "entityType": "Track",
    "nonce": "0x7e39535fa88ef7141c0121dd0ef3118f1610b2dd6b845c547752fc97965bcf8f",
    "signature": "0x24f452c9ec96d659a718e9e51d94fcc95fbd717cffb2776f61ff1ff4676da5bc1aa7388d06f52d3ffa761cfad5f7400feb587c68e6432dc88719a540162cd05c1c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}