{
  "manageEntity": {
    "action": "Save",
    "entityId": "815711660",
    "entityType": "Track",
    "nonce": "0xc369db6af5d3ae7d4b85ffa6a658f63138103aa4d4876b643656e3d220b74355",
    "signature": "0x51b6cc0693c240279ce6d60ba07cce57668b92b2053d4bd0530e8043a0b51a6e4a4636688475e969b36c92903d06c48fd55741a7fd78dbeb6884f100d53130171b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}