{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x411a92e7573aac032f7a4f9dd743aaa159afb3e9fcd9ccd1157b7fbd7bd8f567",
    "signature": "0x00d6a677e59d1eaf36ed76995129b7c62f92e9f1daa75a346ee6fa9e8664e9a377bc069137e3cccaf494a8f28c6136f4fc0c5d195ba849698d69568dfdcbbd5c1b",
    "signer": "0x90bd4e941b941f457DA23902Db531A4F611cb05D",
    "userId": "145751412"
  }
}