{
  "manageEntity": {
    "action": "Save",
    "entityId": "128046422",
    "entityType": "Track",
    "nonce": "0xfa85b14fbd79e1deb458e1af10dedcaca975ccb014efee9d160cb3b476b9f8ce",
    "signature": "0x2e93e8ec4b39f37251129125533b58c4af40870be85cba8ec8c48fb644cf8a800472ac11d397b668df870ce4db793d4b0cd2ae0d28c27c013685c6811fc999ab1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}