{
  "manageEntity": {
    "action": "Save",
    "entityId": "415195103",
    "entityType": "Track",
    "nonce": "0x33cd954cf24c209b5572d66c24ae28beb0a182d9a50de6a730a757c48bc9d94d",
    "signature": "0xcf02cc2f604c744e24c09e9ccb01366c676a65180496b5159753bd32fcd47e92411bea728b8d2b6d7f1f3ffd1a756c3439671637c09d949ee5c65ead03a998c51b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}