{
  "manageEntity": {
    "action": "Save",
    "entityId": "2022446039",
    "entityType": "Track",
    "nonce": "0xfceab98bec6081a41078885dcd6c7fffa81e49e049ff5643ced3f9d72ec3e507",
    "signature": "0x628cda44c16a217c0b797cc52c06564a5b9b0834722960c5e4e33b46ac49b13d3463d82bac7c5d662f294a781f4e5bfb60a1dd4c73ff3ae9af00fbd688f2f3c81c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}