{
  "manageEntity": {
    "action": "Save",
    "entityId": "125586",
    "entityType": "Track",
    "nonce": "0x2f6f01ba4a0601a833d6d31e95069368f39e51499b4faac2edbef702859f7cd2",
    "signature": "0x6d4f541444717785543c61cf53903f9a25e6032b165e9ba5e8ffc67ec9121a1542b8d714135b0faafd5e151cc9d24ac47a898097528db61b6049d3053129906e1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}