{
  "manageEntity": {
    "action": "Save",
    "entityId": "1068148014",
    "entityType": "Track",
    "nonce": "0x8571285909e15edea21e9f9efe7072cce9d1c595f785c307d09cd80dc0315c0a",
    "signature": "0x181b08100eb2e3d6e8870fb952eba485688f822fa662c5d76bb2dea474c62da26f5fd6160e0c2dfb279164d7277424d9e33ed42390cbb4793ea2df2c645b487b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}