{
  "manageEntity": {
    "action": "Save",
    "entityId": "570280340",
    "entityType": "Track",
    "nonce": "0xb73ab9c4c544c6f045fd3faa889532c0f132bf0393877ba4a67a537ad8f2c331",
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    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}