{
  "manageEntity": {
    "action": "Save",
    "entityId": "1930097799",
    "entityType": "Track",
    "nonce": "0xeb2aa2a9d6b870ee71c46b683a42cce872f025be1d7d5bc1490f77317600aea2",
    "signature": "0x88c9bfb9f041625d867538a5ebd207e8bc747df9e1acb5cb6eb518d548f3e3a95a9135c3f5b6b9c0aaae710c2520b711bed7ae5f1da529331cca4a9ee58291041c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}