{
  "manageEntity": {
    "action": "Save",
    "entityId": "801139",
    "entityType": "Track",
    "nonce": "0xa493f6b5b2f6bc9178d9c7e978d35c930991a974d362781adb2d64235104a824",
    "signature": "0x0e84a988fe19a907dbc9b2a5b77490482a4b3cc2a21fded9f2e25ec9e64f434d6a607457ed71ff993b729c2fba98d90df4a9c34faefad430c74b68e92e0c45191c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}