{
  "manageEntity": {
    "action": "Save",
    "entityId": "814307",
    "entityType": "Track",
    "nonce": "0x823b005de9a9130216df72bd5afa3ec4d11638979aec416514ab02e30268fe7c",
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    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
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  }
}