{
  "manageEntity": {
    "action": "Save",
    "entityId": "695992477",
    "entityType": "Track",
    "nonce": "0xe9077a31acdb4106d42ce7f3c7803f114afb75d596e077ef02ee5dc80f7cf115",
    "signature": "0x8a6f5cd77a7c9bc4c91139db81ece1ae74b5903f7bf91476b5243ce913aa856c334a2b72d694ffc9f24125ac23601e551af6d54f384eacfd36e032ff2b187e151b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}