{
  "manageEntity": {
    "action": "Save",
    "entityId": "2011565903",
    "entityType": "Track",
    "nonce": "0x2df80713f70fe81171939316188b0820e8a27539662c9fca75897892111dc994",
    "signature": "0x492be2337b91affc87f63c6971ea75a61d90c2a27bed90f90b5d3dd6148b071a5cc6cd64a81e58631cb7d3334ab6c1593eb440ece0abae394334ceb0f28ae1f81c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}