{
  "manageEntity": {
    "action": "Save",
    "entityId": "31713951",
    "entityType": "Track",
    "nonce": "0x3369029ae0687e068b30fe9aa7708974d920b1097ce9e037607de9191a8ad3d3",
    "signature": "0x308023de39da37657e27b7ccebeb59765a7910de2babfa9dc5b54f2c6dbe6bf51a78e31d86970459aa549fbf2e8affe441de53191110ab75dfc197d7093d09e71b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}