{
  "manageEntity": {
    "action": "Save",
    "entityId": "1933429553",
    "entityType": "Track",
    "nonce": "0xce6184ce032e70f16c72fcb6dd3a62d9a3cc98bc11e087e0fad110f0701023c0",
    "signature": "0x2a877b770c0a858eff88014d169d16946c786440a2641f83548de8a40afe57590bc7ae49b5a7a825f757d119ee1b99bcddf36a0059563ad9878021a9d35916b61b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}