{
  "manageEntity": {
    "action": "Save",
    "entityId": "904260717",
    "entityType": "Track",
    "nonce": "0xd7ef36731e886564bc47d6941fa02450d57e59b29c2361ebda150934ac0e6079",
    "signature": "0x31a8000bd185ccb79226d29fa5255159a6107ca5f967ac83554cff9128af16f31c26882c77ca1e420ff4cb08f93b4bf44318cf348f28e0b74e8646476f0fb8301b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}