{
  "manageEntity": {
    "action": "Save",
    "entityId": "54045213",
    "entityType": "Track",
    "nonce": "0x1149fee1d86ef76c078cc8c732b1e4d8caad503bf5e5add71889da283cd85db9",
    "signature": "0x11f125b52a3e8679f279d2bc63d4802a35159a876a2ab94ba5073c0b27e1ff0161fa848ffd21c2c85064ea5d4a67cccc1577da95d256f35931acfdda8c05ee301c",
    "signer": "0x4086Dda2D91F77cd46De0859a4de37F888508faA",
    "userId": "568518925"
  }
}