{
  "manageEntity": {
    "action": "Save",
    "entityId": "41064444",
    "entityType": "Track",
    "nonce": "0x3b6e223ecc4c37bb2a944a22866232b474cc66611f15c58afed7451b69b25d0a",
    "signature": "0x2cfec67bc41907af1cede045aaa4dedd3560dff0f7c9a6d0461ae9a248e8e775328f42ebed6667456657477e604727de64f9f5d596f22d708f316ca46a0d786e1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}