{
  "manageEntity": {
    "action": "Save",
    "entityId": "1418270820",
    "entityType": "Track",
    "nonce": "0x0d4bd8b3c079b7de61e16bdbe9c304e4703838e4ce6e1eda6d5b167b76255cf8",
    "signature": "0x60388b60d6d172461795ce260c8bd8ec9b2c7bd9e736e73c255926795849bc172505512e196c5c4e04ea1ed1fa037ebe916cce4716d68c871bb0fa353a9d73e51b",
    "signer": "0x2F7db4C1AE3922aD0f32CEdED1870278dd17b64b",
    "userId": "467213409"
  }
}