{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "353898",
    "entityType": "User",
    "nonce": "0x12c2691312db923a5d4468dfa01776c705b83467fcbd6bd3821f0eacd7183863",
    "signature": "0xbdfdc0d4260bc827162649761afc84c4ddcb41eec777c81ee9cb4fe5b029c2a10308b27a5d754d60ba07a5f48445674828a8f8d0a3742c0e57fdeee1be95bfc81b",
    "signer": "0x292eF57C1FAAc86008ab58D5116e0ba424C9189b",
    "userId": "721084704"
  }
}