{
  "manageEntity": {
    "action": "Save",
    "entityId": "1922452732",
    "entityType": "Track",
    "nonce": "0xbeaf06b793081bc6806499af1a46ae516b0eb66e08298b49115885004656b49c",
    "signature": "0x4b686a6426d3742048d9bfd20fe3b014180347cfae639bdceab11856161e3af7186ff933a5d4349f671c63c1b85738659a330b6c40cb4ef5378a6fa33e9030291c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}