{
  "manageEntity": {
    "action": "Save",
    "entityId": "102243",
    "entityType": "Track",
    "nonce": "0xfb348c75e54d03faa5a82ba08b47c7ef0cce6343029202bd6faa68df4e77b095",
    "signature": "0x14cf4d9b15234323c2b02adb2355920973390d3df8835c0a2549c14a4c52178c2daf4dfb7901e699105fd2f10d92c8a33d8fa3bea08ed5e079fcf9e9f8e4795a1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}