{
  "manageEntity": {
    "action": "Save",
    "entityId": "88272",
    "entityType": "Track",
    "nonce": "0xb293ccf69f5355fea91f4340291db31e885cad8f0b746f9f7e24572f70c04f96",
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    "signer": "0x63EbE5a1B5C5F156330BDf810f5fFf6A224c75c8",
    "userId": "309080"
  }
}