{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "543686915",
    "entityType": "User",
    "nonce": "0xf63282aea19e434e4ca5956a9efec6e5d1ce5996a3866ef72faae3392bab3305",
    "signature": "0x611d46a659566feaa2881954b2ac7d7f9b64d3983b42d280e725357ff94aae1962732e500d0d63a86b4bbe56c4b13efcfb4c3c25b1b990d720fff1c21c29180e1c",
    "signer": "0x8b77d47DA28d313A2824468913d2f44F9a5B7b75",
    "userId": "808833626"
  }
}