{
  "manageEntity": {
    "action": "Save",
    "entityId": "893889913",
    "entityType": "Track",
    "nonce": "0xc4f7375d8c0adb49146b33568775bac3e094980202040607b7da78e7b1098746",
    "signature": "0x21a9142211d5fdd20ee6fe99a50db63d2eb4d79e94f00158e68e4596b4d01fcc6fda5e44e40816623ca8d95246256b9fbf4d91952915fafa42755fb7f47716de1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}