{
  "manageEntity": {
    "action": "Save",
    "entityId": "1092973840",
    "entityType": "Track",
    "nonce": "0xdbc55ce779412c5b3338a49af7c3a185af26ecce6e6e24491ac97915b93d4894",
    "signature": "0x93397e253f6eca4bb52d6e5c91626a4ea1748777383a10aa01b590943b8fa7b773a5f4ba65d1b9e5735a81312f160b60ca01143a33ed9e334742b0c0b6b4c91d1c",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}