{
  "manageEntity": {
    "action": "Save",
    "entityId": "829921342",
    "entityType": "Track",
    "nonce": "0xaa987882a6ee29d728b9954bb4b4ce5e8a8c0ec64a74bd323c8f04284c475a9f",
    "signature": "0xc08af3549c6aab267f0f881538894c8b98ce7675a69b5b99b3c63a06ca9bd96758c39bda8a909ed4817090c001d280fe30d6ff02ad0b18dd5b2317d36fb29fe41b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}