{
  "manageEntity": {
    "action": "Save",
    "entityId": "319045",
    "entityType": "Track",
    "nonce": "0x1b956fb6213253bbc6eb4e168cb241acbda97665b2e0c8ea980a646b64284d35",
    "signature": "0x764c4801e429104040cfa03914af77ce18655a594386b8daf4e6b17b395696352aaef56801abe36088d5f0230567088c96882653a1b8703a5026c51e027e67c51b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}