{
  "manageEntity": {
    "action": "Save",
    "entityId": "410007860",
    "entityType": "Track",
    "nonce": "0x8b2f8304a1921ca1f8a8080f3db96451c934390db95ac089288d6797dacf241c",
    "signature": "0xf23883a413c9ea7fa0773eec47ca05fffffa1b82c067f7ddeca9d5a4b3bdd9625de24414cdef5dcf6e3e2747d8b1d44bb01f28449868815a740bd689eefd8afb1c",
    "signer": "0x17dD449C895B0Bd0695f18B39fc782E606c2a10F",
    "userId": "718782552"
  }
}