{
  "manageEntity": {
    "action": "Save",
    "entityId": "496119361",
    "entityType": "Track",
    "nonce": "0xf3ab397b527103bd5a46a999ea6e648ce63d7e26856c7d5e8ab7d7da6803bc80",
    "signature": "0x3f5275a51211da0817fdd4ed649d84957aa07b29ba04d7b1d706a645cee4842509ec296b142893218000d89bb7e7c8349ef258cf82c1856e0facd5e6972786981c",
    "signer": "0x261c17dd7171Ea18B7ffF1AbB7D0495fEa0dB0ad",
    "userId": "185086709"
  }
}