{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1a92d430ea07534721381b5e07d10f6d9fb6e77e0cacb5083207540a95e2b24e",
    "signature": "0x7158dda61410f555935a3ab2b7818aa7c70fffb1dd1989769b9f780c61131f894526e9457154d7462399d4d47f6c3787c7937c20a9148f2f0c3f06aa17d6cb791c",
    "signer": "0x21329468f0a33e8D677901e6fA6e85Ac7086CE60",
    "userId": "181210920"
  }
}