{
  "manageEntity": {
    "action": "Save",
    "entityId": "1350826306",
    "entityType": "Track",
    "nonce": "0x9d636fb88c651d0b96b15283a08ae256a85d56358713c3b08c71a4cec716542c",
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    "signer": "0x760430d15B04B4b79d0B7EA1c6a994dC6764947B",
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  }
}