{
  "manageEntity": {
    "action": "Save",
    "entityId": "327666",
    "entityType": "Track",
    "nonce": "0xb929a8fc46fc45f34c244ae95714524fa3a07e01ad13b3a68caaa8c0d876180b",
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    "signer": "0xaFdEC27229de1023f5322f4Dbf0e874dC548011F",
    "userId": "817564020"
  }
}