{
  "manageEntity": {
    "action": "Save",
    "entityId": "92567",
    "entityType": "Track",
    "nonce": "0xee3ce646923dbc68729561a898b75c6640ce2bf6935ccbda1243ed08d9ea8d6b",
    "signature": "0xf9b2da208c85fd4b615d3711a0c4906c57a2cfb12e751824c566404806d805654d0ba79c2c919453c964db82effcc0df7fe922da84ee5ea24925f8bd256ad71f1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}