{
  "manageEntity": {
    "action": "Save",
    "entityId": "1743083780",
    "entityType": "Track",
    "nonce": "0xd34617fd5c7d51b0df2dae14f2eaf608c8ece67a8d412809359842f655c4305e",
    "signature": "0xbc6fff1025c5cfe0ef58c8d2b80bc30c68134f747ae5fa966a9b7b362725ee1f1f6ef79fc650499825337b2e11a9d9597b0a6a78ffffbf02d756cdd84e0088c01c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}