{
  "manageEntity": {
    "action": "Save",
    "entityId": "1673758253",
    "entityType": "Track",
    "nonce": "0x2ba0eb6afafa85dc3b3ce2cd6d7306cebe7baf52ac4ab8521322ef0d17e58ee2",
    "signature": "0x5c083c7f1525bb13a55ef8b5258cfea117371f2c1f84121245581f5974960fb544d3fb1a50811d622ac085ef3c4df55862b1c28e0e386edb4f833431d62993191b",
    "signer": "0x7b9D7a1915958B10dE7832c507e8b0343E589c1A",
    "userId": "104326"
  }
}