{
  "manageEntity": {
    "action": "Save",
    "entityId": "784950483",
    "entityType": "Track",
    "nonce": "0xeb92b0af664b81b8270e93f70c53e98c15529cb648d35f83bf4740c12e3db369",
    "signature": "0x66ef4709972bce4f9aac6990405407ac0a025e72e791837f37a9667cd6eaeaa30b0ab1790be2da9d396f92619f9aea80469284f6803c703049c19c44a0b5b7ae1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}