{
  "manageEntity": {
    "action": "Save",
    "entityId": "692483689",
    "entityType": "Track",
    "nonce": "0xa2ec6d0c91f7ae97f698c1d509e637a239dda2b35479e2da091c60a1d87d4c14",
    "signature": "0xa0cf8d58e3de58069910bb204944482e81c40e3fa9faac6c44a18dd285ac263a792eccb2d2d561021a40408075c343592702fc9424b3fb58aaefe18dd27065551c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}