{
  "manageEntity": {
    "action": "Save",
    "entityId": "1391320348",
    "entityType": "Track",
    "nonce": "0xb8033a7e60de6fef7320f04bf8c8a1b40589bdb7f5000395652dbe735ad65bda",
    "signature": "0x67a9007210d3dbfc54cc496f63f6e39980326c2d41abf8a85efbebe7f9188769074b1dc75f96f98feeb4dd7fcd16cb790b3a86cab70d4623e169742f3f5a3c911b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}