{
  "manageEntity": {
    "action": "Save",
    "entityId": "808194482",
    "entityType": "Track",
    "nonce": "0x8df5755f7309a112535a2a6771497aeab095aca0642fe16fe3ec7e522bc63811",
    "signature": "0x48bb81358cf2eecf53624502854d8f49969c925c8746182ea92067e3a1cade640505113fb989b0df6b23eff1c717e03cfeb8208d34268fedf4c438a154a6f0031b",
    "signer": "0x0C6D8C2BA2A5C59e3a0Af2b5Dd3995aA0D91221D",
    "userId": "755516"
  }
}