{
  "manageEntity": {
    "action": "Save",
    "entityId": "186352",
    "entityType": "Track",
    "nonce": "0x2386f3175fea6616a26ce8ecc8adf15eb89df973242e2cb9bba5811a8beaa07d",
    "signature": "0xdc5095508dfdf1e282bbd88447f95bae8ae892944e963fcf579dbbe27d565b5e2c10019633343a611030fa450e9aa64da9743baffbf0ccfd6db04c57ec553c301b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}