{
  "manageEntity": {
    "action": "Save",
    "entityId": "1363414685",
    "entityType": "Track",
    "nonce": "0xb495fec9389f531565a706489821ba8eaef4797fba557643e1810179fcbd5863",
    "signature": "0x12580d62c4dcffd85610ae720ec98213f530eb453005c875c928ac7c372e7c3d70ae3f6b0011133617de2437b2ed73d4e0d32bc482ad7ce1424514dd622420591b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}