{
  "manageEntity": {
    "action": "Save",
    "entityId": "957925293",
    "entityType": "Track",
    "nonce": "0x41eaee1cc80ef8aea0e15f5ff90bcdc6902937e9cc59200205645d3df140dbd4",
    "signature": "0xea533b7ac7e56dd68c5812960143645f3943adc29d28da44a1b7399e21c74d797159fa80be06707b1872fe186c34435a54148a5eecc90f0680cc2b804bab52f91c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}