{
  "manageEntity": {
    "action": "Save",
    "entityId": "1233033535",
    "entityType": "Track",
    "nonce": "0x64e940b15228bbb228edaa577c89b54a577b13ace42858168b0946ccff600fdc",
    "signature": "0xdfb44259d03a7832e01f9f9cffdc778ad156a1d7cf3a4b1bf535663b9ed283f76109ef0b7adafe6dcc4b8884dd31820053747ff1e58f0948caae9acae10eb3991b",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}