{
  "manageEntity": {
    "action": "Save",
    "entityId": "368257",
    "entityType": "Track",
    "nonce": "0xdb06ad2730e5ee53433cd48dbeb9cb7d642df78038bcacdf3e0a45b57f55d359",
    "signature": "0x2eab2ad6aa60fecf5a263eef228dc930b2c94d1e7ba92b03b4f11d1ef36805d459a3569ca0737eca41a3c5497bb714d375cdafb4dd85e884a24e52a8e21840b71c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}