{
  "manageEntity": {
    "action": "Save",
    "entityId": "954910568",
    "entityType": "Track",
    "nonce": "0x95f05894ea6ee46f97e693b0b380ccc43d8f589fb8281cd82e1fbf49326d92bc",
    "signature": "0x4c033e13bf9af6419e302ae5a61605c4335e355004769aaf9e5d3ab1b5f4463f1f270f0b0342f0f4216d723b1a1ca7fdfe9422f8b428f8e534764f0b684175211b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}