{
  "manageEntity": {
    "action": "Save",
    "entityId": "88272",
    "entityType": "Track",
    "nonce": "0x7adfb68898e5ba803afe7e3c2262cd523d86baf679ca663dac8dce0a93640224",
    "signature": "0xd525d1ba905d983fce8b07f18a5f2eb2c13fdf76e190b8d6921dcd0eccf24ef843da55ce628611a98e9d420964b51dc4e79b27ba4b7bb70746500b4d40064b6f1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}