{
  "manageEntity": {
    "action": "Save",
    "entityId": "327601821",
    "entityType": "Track",
    "nonce": "0xb67e9c76757ccf2b6b602d709fac43ec2bdf5fb9e07a74a715119ef2452b6e2c",
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    "signer": "0x33c702d534707f8Cada5DdD521C5900827973f1D",
    "userId": "5642"
  }
}