{
  "manageEntity": {
    "action": "Save",
    "entityId": "717693239",
    "entityType": "Track",
    "nonce": "0x52dece49f1ce599d329793b9d89b620c96112e33509da650373ea855e1be3ee7",
    "signature": "0xd784b80b9593d174505c2fc67058c711286a043cc34a25fa9e475727af14ea7922f4cbb8ecdd695dfe08994823c07f0b81efcad19f2d05bf0e5cf3b8252b41dd1b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}