{
  "manageEntity": {
    "action": "Save",
    "entityId": "1141868327",
    "entityType": "Track",
    "nonce": "0xb7d2cbb8182b630cbbd91f7a6c87b2f4fd93e1b9c41e320661d27ecf87a1d626",
    "signature": "0x3db52872a7adf05777922ee32ee9efeb5d50d74f5cc30a96d18ff79c970136ac2bf7260999fd040812972e5a299d755726aad9faa7486dc1fae12353f3016bf51c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}