{
  "manageEntity": {
    "action": "Save",
    "entityId": "1434225868",
    "entityType": "Track",
    "nonce": "0xa3079766574bd6d567260702de883f2df06ab683735c3afb2e8fc83c8f43986f",
    "signature": "0x3673673ae2d104e39b1e9208456ce670c3a38879c3e0ccd242d84426757b1dff7f2ccc7c426a0e19350bd8ef7381ff94cb4685b1eea3fa6d0a80adf5bae7e1d31c",
    "signer": "0xD71D6a61b797d5436c8d291306fd7DbCe6257Cc2",
    "userId": "117522"
  }
}