{
  "manageEntity": {
    "action": "Delete",
    "entityId": "257423582",
    "entityType": "Track",
    "nonce": "0xbfd4555c4ec08389c71261b3df7f9e7f78677a4dad383b309f3cbbf1658392ec",
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    "signer": "0x98F4295af45c93F3802F70FC0811654a74df1e73",
    "userId": "715160400"
  }
}