{
  "manageEntity": {
    "action": "Save",
    "entityId": "68933547",
    "entityType": "Track",
    "nonce": "0x3aa9240725b87d2a15581d76d18711d3f7ed381fea616cd024bb8b65db3014b9",
    "signature": "0x562d9584d6ee70c12d6c87ea1ca53b983066a9d6faad2a6192e6e312a58b6f68187e481fed40d20ffabb6f01ad0caf67811688ccc4c263680b5649da0b2350ef1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}