{
  "manageEntity": {
    "action": "Save",
    "entityId": "206793",
    "entityType": "Track",
    "nonce": "0xe56b78b496396eb68e27c4998336660b9210b4403212d46a0af0db678eb7532d",
    "signature": "0x778752438bd1e1c786d8b1a8a667082b895b7af62022c5a534550be7ef20c2672990b850c3bea0b36cc0aac6102c943a4f7ce43e729c1a3d1a727ae7144802031c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}