{
  "manageEntity": {
    "action": "Save",
    "entityId": "813963426",
    "entityType": "Track",
    "nonce": "0x16f6c91b81ba414211a244eb3d646597621943600c5d911ff5fc35077c7972e5",
    "signature": "0x26d1d69c51ee6e614e4502990bd2d48d0c5580e85308fb6ae71efc4d3705ec08020004ab7bd6e0cb8d181fa4e0922850c768e94add80018a95532ebdf2f8cacd1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}