{
  "manageEntity": {
    "action": "Save",
    "entityId": "1068216565",
    "entityType": "Track",
    "nonce": "0x38627dcca5763e653b82c51562dd5367850fbd08e48d51337d3b07f6a2c9d716",
    "signature": "0x2f774d3d0e067a6c61f6664f842126d62e1d301fc852b8be811deea0616d5e334357ad91be835f1d57e139a55f38197f3ca5f7474a1948c0ea261f80ea21ff841b",
    "signer": "0x722b43224Dbc7d6931b3C690696EF03933374bff",
    "userId": "772126389"
  }
}