{
  "manageEntity": {
    "action": "Save",
    "entityId": "58443",
    "entityType": "Track",
    "nonce": "0x1ae52c2bcf03af6c51423e4ed39fc82992bb8db2fdd17e56d273789adf1befc3",
    "signature": "0xfc5cafc834fe7d0468bd55db9b88ddc1b22302c1bc58137784e7dbc38df229cc58d986bc6ad73da795083723fbf607dbdaf86b4cffb9ead8b8b88a3712b841661b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}