{
  "manageEntity": {
    "action": "Save",
    "entityId": "1939661197",
    "entityType": "Track",
    "nonce": "0x36ad66b72109162122ed9ee976ae195f3c308d4675cc8923cff0b1da43359720",
    "signature": "0xc1d4f2ba6db4ad50d3076ab4b88b44b875a9128a12f5c823b0be42ad222490171989ff1aeaad4984d111069f2c08df22fd599442ab295a49574ab02863b065091b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}