{
  "manageEntity": {
    "action": "Save",
    "entityId": "9023854",
    "entityType": "Track",
    "nonce": "0x425f0044fffcc3ee23dbbd64cde065de00e5c47914ff6f7a080bb85868340a2b",
    "signature": "0x98e7a4afabf181ad3901ac2a00ed5c565fc7a6df2040dc7c8c625d92413c950d7c081e5da6118d51fdd41909990ec8e6d94c62b4ce0cce8b84f12cc2db2240d81c",
    "signer": "0x53d8e61f7BdCd69E26B5AAe8F197464091224DB4",
    "userId": "99786"
  }
}