{
  "manageEntity": {
    "action": "Save",
    "entityId": "941514665",
    "entityType": "Track",
    "nonce": "0x68208f614f311af8db5f1624842068013a27f4263ab37c47fb3d006cb3aaf6e1",
    "signature": "0x382f27bb9692d0fe136a1619295f0761176f107e61dd1df19d92a91a0f4bfc0d15c16f9dffedd34eb3a32137b302361bf9a7e50d94942a334fba6f2e3e4c27c91b",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}