{
  "manageEntity": {
    "action": "Save",
    "entityId": "311277824",
    "entityType": "Track",
    "nonce": "0x0029943d16404adedcd40bf7e408f217a294803741faf225fdf5d28197b74df2",
    "signature": "0x24cde93fc554ef4bbabc1f79926a2310a57f9c6704b14d40376786462dca06cd221766742b4cf8e844669add4bf4398f9f1c4a14b2906edc48482e38eefb46a01b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}