{
  "manageEntity": {
    "action": "Save",
    "entityId": "1294279867",
    "entityType": "Track",
    "nonce": "0x23f89936ddce4db4873d065db1c91bd4f9391fd973d08b4bbf0a96ca31a4368c",
    "signature": "0xc8b836309c32744d7078817fc4bfb511cb0f81f95ec9b4eb3e579a1710b790f867b4e505c8b8c8b40d9f7d2e0a00f33e79075bb339590e39a7aafe88ee50dbff1b",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}