{
  "manageEntity": {
    "action": "Save",
    "entityId": "1008778618",
    "entityType": "Track",
    "nonce": "0xc6253154a4be9ab2d925448916d8bdbdf7e04f7c3ff914fb495948893964cc8e",
    "signature": "0x1aea16fb6ea01671082c309fca340f46e90ba3523d59d95f6f1b07fce41c86085144ab0ecbbab1b9342ff9759b11529b167866654c13b487833c07f3a5a271b81c",
    "signer": "0xc6A421843C183591853a72f2afe7AF4CcFbc4FA1",
    "userId": "344756485"
  }
}