{
  "manageEntity": {
    "action": "Save",
    "entityId": "227277",
    "entityType": "Track",
    "nonce": "0xa26a7d87fdc513115bdad55cfc99f0fb1829eb2165a9e54803f4bedba9758e6d",
    "signature": "0x11acf98f4bfe1651623c5320696e353b0a811744a22265ab9193202015e3a105689198d407072615af23f676007504557a0d38bdb335cdd8f03de4fa8768f7b41c",
    "signer": "0xDD3Cb841c7f19ec5581F8E2b14d6f7a58B92d0F7",
    "userId": "582464754"
  }
}