{
  "manageEntity": {
    "action": "Save",
    "entityId": "1681065952",
    "entityType": "Track",
    "nonce": "0x8862253ba393b0362066f0dd958f9a7d55ccad9532c91b36d48f1d1dd2401017",
    "signature": "0x7c4c41293b7cbda54c1413baf1fb9d92ed029a5e332dbe04adbb8fb322ed4e6b2baa1e3e9a6c6d73787e51f315fbcab001fbe2371232da84996e87dfc41e89051b",
    "signer": "0x6802Fe39C5FA9f99ac1Aa32F164982185A3E70ea",
    "userId": "152482938"
  }
}