{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6d8025b12647a07e0461875590bd02f5b7ca6c100b38ee75a29b2e24613b52cb",
    "signature": "0xfb5f247729a28540209a029cd52f6e7bbb63c519ed37ef7419d4118a653d5a5a0e0e31e16061024cfc7dfc41cb9cf552bd605ea46365ad415cd588ab1ffc03e31b",
    "signer": "0x210d52C16669FCb751d42D689671e3f6176C82fD",
    "userId": "532146081"
  }
}