{
  "manageEntity": {
    "action": "Save",
    "entityId": "1826135152",
    "entityType": "Track",
    "nonce": "0xaaf1c896a537b6dd8e97bf76b90af3f9caf4f83aeeaa5172f5842bab275a4718",
    "signature": "0xc75bbca66bf06e5aa5ada1a5a4f2657321392958c71c550cacc46466ef03873503ad691b508d283335e9f7469703b8c4f230d4bd28096042ba2e1793bcc66cd11b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}