{
  "manageEntity": {
    "action": "Save",
    "entityId": "518934",
    "entityType": "Track",
    "nonce": "0x94e8934f78cf2bd1c2ef14deae7e471b20baa9e441a95bd7d9eb202e1cc562cc",
    "signature": "0xd7f1c2c726b74c0ed91d770480e99089b908552282078996bf51275d662e651f65f7acaa6e77e00af5ecc8ed2c61b864080d91deedfadf962efcdd7e0bac18cc1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}