{
  "manageEntity": {
    "action": "Delete",
    "entityId": "448401087",
    "entityType": "Track",
    "nonce": "0x1abee668473e48c72e35b69fc3fd3ceefbbc210299f4bab4115bdb7900611315",
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    "signer": "0xa8a656578194b14b851Ab0d4a74272Ff373CbF6B",
    "userId": "1512820"
  }
}