{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x935969ff342d0f30fd44741ba2b374198f22b8ab725e1d27b6f3a9e9aafe275d",
    "signature": "0xd4494aa0c9f638231fdd17aadb17a5404bc5f39706dc074ba92a634739dc5f240976899d751603f86dae6b99442967043cc0ea13946a45d88b6c980591a976c71c",
    "signer": "0xFd6Fb83Fb0f0447cB17dF9Ab702BF8A5b7F484BA",
    "userId": "241276640"
  }
}