{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaef1c01360805be72feba4518de960fae6d08cd013c5b46c37105cf2cc424620",
    "signature": "0xb59867d411d8f96f12de5c3f72259988895929b17b8fdd4821d84790b293917d39dd0996ecfd04f9e8d0c441ba73e1ec0a28b0ccc9cbb5445c70948f60d818a81b",
    "signer": "0x4dC20D77e505d1657d39Cf0544bB81A6B4790185",
    "userId": "891356089"
  }
}