{
  "manageEntity": {
    "action": "Save",
    "entityId": "934358367",
    "entityType": "Track",
    "nonce": "0x2579c6cc9c121c1255d0f4b32eb4ca5450a6fc355c2127bc1262edc6f794addb",
    "signature": "0xb897b41b5871511bcb9e41a8dcc4ab881ffdba00bbf90ab3f0a2d0e9d56d0cd371f177cdbd6d04ce5992f88817fe7838c90f4ae079d0edabd0979ca2b5a0b98d1c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}