{
  "manageEntity": {
    "action": "Save",
    "entityId": "1108281295",
    "entityType": "Track",
    "nonce": "0x711858d1a168696fde240aebe0a9d57e008b34f99e4dea911fb71d919d9ba436",
    "signature": "0xc3dd506636ec3ad05746b9c5e89da28afd11ac9aed8dfb386abdd281bf8bb3b53240b828b4d104fbf6808c4175d822000f50e01c523519dad177ab13ee03140b1c",
    "signer": "0x251bc50D49C565ae127a0AfC10494dB44F7378f8",
    "userId": "923740484"
  }
}