{
  "manageEntity": {
    "action": "Save",
    "entityId": "1255399633",
    "entityType": "Track",
    "nonce": "0xb332f75c3b0d5654d2dfbca5f74c5377ee638f16995d850f85b3b385e53dc9ae",
    "signature": "0xc145f6a028d68786f7c81e408019fadb13c8c71160f6d0930b942f83379e6dbf3d60dc4b93507972e80c7dda6f21677df41ff44b9d27ebc19542ac49cb713bdf1b",
    "signer": "0xAcF1330412ae929ED0eab55ee4fD668A669880E1",
    "userId": "615925709"
  }
}