{
  "manageEntity": {
    "action": "Save",
    "entityId": "536310039",
    "entityType": "Track",
    "nonce": "0x41f20d6145b214112b498aa65bd71d227d5fe36375fae2dc00a45793577d7df4",
    "signature": "0x5fa736f741dfa820885b52d7ee37ec5980871c2d63f653286d0f3aa9912a2afb34f115726b1f7b5f64c2ccc59523157512e6144d61b051065421768772cb467d1c",
    "signer": "0xF886D10824DDa867eb89ACd60EAF44D01F1B0E8f",
    "userId": "381084983"
  }
}