{
  "manageEntity": {
    "action": "Save",
    "entityId": "168836936",
    "entityType": "Track",
    "nonce": "0xac7acc2cafec0836730f242d91f645543e88dfd16ed4564a2c84ae32be7c74a1",
    "signature": "0x525a36956dc4c156010c8c942403a4d26f51e8afc66241007991f98b824a300f50713ee7ec45eea02b0e0a604d178df445f8ff1add409a7f22033ba28df529aa1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}