{
  "manageEntity": {
    "action": "Save",
    "entityId": "1341620088",
    "entityType": "Track",
    "nonce": "0x3d691308a7102d92656c47bc7fc523a78884347d36867bb319cd0e96b32f786e",
    "signature": "0x6ffa35187941704c51c300192acc137e35aa4f7abbb9f830fbc9d063956f324759f06eb8ae9521f9a87eec9a7af2364ba1a7d2a21e9cdc738f5440774a30a4071c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}