{
  "manageEntity": {
    "action": "Save",
    "entityId": "163004874",
    "entityType": "Track",
    "nonce": "0xae8bd53a9a17543ff7946534238d745050850e2ca40f349f35cb3affe76dd9ed",
    "signature": "0xeb04491bf2670f3e848a140e58c15c3d6208a93cfe49b0f8cefd30d138a57ed844b122234c106ae8230d445e443f18bd9ab6082196229586acc370b3200f68291c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}