{
  "manageEntity": {
    "action": "Save",
    "entityId": "135469",
    "entityType": "Track",
    "nonce": "0xbc8ca5eeee732ddf8d15804796780f84b57ecb4fe1c5f767ec6050dd3820a4fb",
    "signature": "0x863d9e71ea0a8a90de2469ac0c4ed9b26b0eeec97fe341b099dfc797c491bc1863c94e8e1e6ef96964f8ac9ac59a5b70125f3e376121f51bc4c834ca9af15d2d1b",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}