{
  "manageEntity": {
    "action": "Save",
    "entityId": "207594",
    "entityType": "Track",
    "nonce": "0x6d31797d737af85d73f4de086fb56e6705c79de2f6bdaa8ee6f1d9769f696030",
    "signature": "0x874f07c9ff34dd346adff7483dbe4df02dc776f1d028c8005419ac240a2ed941236cce088dab0ba3373336ccc488ce908dfe2c99cc6f65719a2fe85b6477255c1b",
    "signer": "0x03e9Caf2aeac5a0F0e4Be56410d67A4148D38Fd4",
    "userId": "47828528"
  }
}