{
  "manageEntity": {
    "action": "Save",
    "entityId": "327610",
    "entityType": "Track",
    "nonce": "0xf37ca4457d4a6f0344511a9d62215663243a1311a3e0e25aca9f5dde57311840",
    "signature": "0x81545e37238bd963abc0e9aa66330bb8b9ea7ba51be7dac44e6a6816ac052b4946a4f4001297b7f51a9728c9db1760a7c14ca77648a7eaba7efbd334d05291ab1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}