{
  "manageEntity": {
    "action": "Save",
    "entityId": "1828926267",
    "entityType": "Track",
    "nonce": "0x042d2d8584dace9478d18f0a4b8cbc085fea233e75b6dc464578e968797fbd67",
    "signature": "0xd39b2acf3b2dbfbee38d024bc00c731319f66d4023ca3b6daef6c82f2b9fcf0d149596db5c54710e4232b54add6a26bf5140f3101c05e2d53cacd59d2c2b23c01b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}