{
  "manageEntity": {
    "action": "Save",
    "entityId": "1683437393",
    "entityType": "Track",
    "nonce": "0x6c7d4e2016366970a62663f74a6bbe4650ca8571efdc0421779d66cff3b39892",
    "signature": "0x7884e893afb8deadfbe9c483e73c8285d85f213aab120b2f259e7e53af83433a3a650155f1c86960bbac95905dba7bf20636eabb5437f1a447ad75f68ba1a1911c",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}