{
  "manageEntity": {
    "action": "Save",
    "entityId": "110129352",
    "entityType": "Track",
    "nonce": "0x9ea7f75017dd5974b0f19e01863bc01a63893c7d574adf625bca27cc65e64348",
    "signature": "0x15e7ca2a4f1467704ac080294c1db6406f751575e4571faa721a57cd72184a80429f9d1f5417855718a8cdcc34f34fa1e72f4720d9d4091053d9c582377e56ef1c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}