{
  "manageEntity": {
    "action": "Save",
    "entityId": "1063536",
    "entityType": "Track",
    "nonce": "0x2f585c135d727abf614a0da466a791f2d63721037e59f076b974b8b5b98410f0",
    "signature": "0x91169d9da1265f1c8a26a4107762ab910a617cdf32094b50ca0f35038b0fbb57240b4092c22a9d48dc72cd2685f3bbe9af356f0ecd8b1f46df561429ee0536e81b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}