{
  "manageEntity": {
    "action": "Save",
    "entityId": "260522953",
    "entityType": "Track",
    "nonce": "0x8e118962d79a3f708e0f63bcbc1719b4e24698cf3eabde5438a8498d8417650c",
    "signature": "0x84960207066be64e1c366d7b2bdc10b66d07052052ee606a43658fa533c727f50aa2aecd66d69d775ef53172828aaf8899b834407d6aa1cc570360f3f545c3de1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}