{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "444242968",
    "entityType": "User",
    "nonce": "0x6c21657d4ff5f795c4f8577a3040c49690c92b6009334952bfd30a00713dc8b0",
    "signature": "0x28a589ba8dfa963c7c7f05e202852740396669be15c365cd9f7519e42c4e27e506d56c7e207970835d125753770fbe6ef92ac14eae1c4b2208073c7a7eab531d1c",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}