{
  "manageEntity": {
    "action": "Save",
    "entityId": "88036",
    "entityType": "Track",
    "nonce": "0x10bffc92de1c8005f667ecb18b76719027b3fafbb236ac2628d696fcb20e1f01",
    "signature": "0x5fcb630419bdf9ebf5a4891526625163edd8c4ea299322643f870a32ffba65ec431d67a8de5cec53454d9df3c4aac8d246abc6636d91a1f3f8b43ec57f46f6881c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}