{
  "manageEntity": {
    "action": "Save",
    "entityId": "1079810393",
    "entityType": "Track",
    "nonce": "0xdd65fdbffbb27bb303abf8818c6181a3aa8e33a6f387ddb57c4600cc4247c679",
    "signature": "0xdf2b125d27f0069b413afbb2fc9b0be80f1cef89e1a0fa091560351cb4c99a651c04d3d5753ee45bb56246c1e667c1839130643cfa5f77b560aa84ec529dcd091b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}