{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "748896412",
    "entityType": "User",
    "nonce": "0xa977982585a6faabb4c5b4f1f81e2f075421cf50332599f3d0f4ed2472f8c0d0",
    "signature": "0x147a244a1668d30434c60b74b1120030b76cab88b225c70b80dcfd6288bfb6cb0bafe982020cf9a818a0be9c062aec8025be3ed0b058dc7af4b0b723c2dafaef1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}