{
  "manageEntity": {
    "action": "Save",
    "entityId": "522996263",
    "entityType": "Track",
    "nonce": "0xb03d31b7310c14e54f9e570fe31d476dd3ed8e7fa2fbfffa43b86710f7892fb2",
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    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}