{
  "manageEntity": {
    "action": "Save",
    "entityId": "1333410823",
    "entityType": "Track",
    "nonce": "0x416fddc88469e46f63cabe93418d816f04bcb62ac5e868b457648934845e237c",
    "signature": "0x27dd8242d62873ad0c46844fcf9c944d743d89a8f3b9b47d512c053cf22f3d4f5cbf91d715a792eadb67b8ca64f7022c7cfa051c9824d69fdaee7375bdb6c2c51b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}