{
  "manageEntity": {
    "action": "Save",
    "entityId": "1712437013",
    "entityType": "Track",
    "nonce": "1792447389758458751",
    "signature": "0xc7d1a73bb77c8fc8f0bff6a077817e97891db9924ca343af4c52e8db1f4c03d043178cc9bfde9bbee089115c2a4351c68abfc6b3a32e3a8dd8bc845f960ae12e1b",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}