{
  "manageEntity": {
    "action": "Save",
    "entityId": "934427204",
    "entityType": "Track",
    "nonce": "0xbe2bb3c29fbbbf0504f8cbf33274ac41ae83a5285a869c16590cbeb396adb21b",
    "signature": "0xb416ca1a954c3ead6849b25d8d7a1d3af2e453c9f0e83cb846f81de749f180562f4609a492bb8150776974f280e56a1fe85bd94468752bb38aadfbccf1abe45c1b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}