{
  "manageEntity": {
    "action": "Save",
    "entityId": "1330935410",
    "entityType": "Track",
    "nonce": "0xb03f766701700f94fb01efcc41eb55d045d163dfef4a8e359aceeb17400c9643",
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    "signer": "0x7D273271690538cF855E5b3002A0dD8c154bB060",
    "userId": "1"
  }
}