{
  "manageEntity": {
    "action": "Save",
    "entityId": "1029490232",
    "entityType": "Track",
    "nonce": "0xe2653fc6a8daece222898354500b1a933566b82f3465f541f1dbf50b566cf068",
    "signature": "0x7305ba43505d24b5cec994acb061d775586a8e0c3fa576ea826c995d8474df611ef794135978d53d677544b62a89b4236506897a1907e34d087cff05bf371fba1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}