{
  "manageEntity": {
    "action": "Save",
    "entityId": "1691111148",
    "entityType": "Track",
    "nonce": "0xaf124a9930375f93f1f20e22e422519a28595c684219661cb6a83f5bef031b52",
    "signature": "0x69d1238dfcb960ce9625579132ad3982ce421b59e2f6e3d01adcafb0afe6048e5ba2dcecc36ed9f56a7bf7db31c7d3983fa1f058032c1232ea05008ebced3aa71b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}