{
  "manageEntity": {
    "action": "Save",
    "entityId": "1705600968",
    "entityType": "Track",
    "nonce": "1792511499086603787",
    "signature": "0xfd0883df364de6b7a389819ae21b31249877383b91b5ea0c5dd214d026c413d132bd6f6663648901af1d06fef9a43cf1136271f8e29d20e790990d0fc72629f11c",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}