{
  "manageEntity": {
    "action": "Save",
    "entityId": "1030634",
    "entityType": "Track",
    "nonce": "0x1b46c8e33ca7d49e61c52d63afe08ed625524d7ff96066b3024176730933e402",
    "signature": "0x0a348021f5ccc921df18ac973f625dd9134167380692139edbb68da678a93b397690fc8ed04d2c2cec2bc0959ee68bb5675422244078cd0685ee53ca7220c6401c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}