{
  "manageEntity": {
    "action": "Save",
    "entityId": "1531613036",
    "entityType": "Track",
    "nonce": "0x30dc1229a1a68c595b8462d2e6ccfa2a3236a52cbcc98755596235eee26cfda5",
    "signature": "0x5af402f24d3c747db6bf0bdd371bb853b80bc1cfec04cc01c7e105387d4b1f5637ba174dc4ed9a0842fccd87c680e75d4f57b52d75b3a3f8788e6860d5775e041b",
    "signer": "0x568426a5D555ADe94657d547B2Df4a4dc1f0C014",
    "userId": "71569007"
  }
}