{
  "manageEntity": {
    "action": "Save",
    "entityId": "1736985351",
    "entityType": "Track",
    "nonce": "0xae97a79427d0fa0eb692c2ae8f88e626d2de9432e1b9ec9fdabc312f4eb86608",
    "signature": "0xb4014e481f3f885da4d7c1b670b6f9af060e7dd53b654a8d5e1ce1dc866f17591300e969a058a58e50baf765caae5361cd60d848248408e437ad311b9b7648301b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}