{
  "manageEntity": {
    "action": "Save",
    "entityId": "1094313",
    "entityType": "Track",
    "nonce": "0x27feb996b12c43c485eafddaa644bbe22c221680a6bd2a9bda761ea350fca3c5",
    "signature": "0x1542ff8187105a730c0c154819d5dfafbac2162f8cbe7acf2b16eacc202cf3b163c852b618c53a68d3958990cb07d1bbd4d4cff1decd35df168c738a2be74de71c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}