{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6c7ffaa93597fac76394ae982913bf8e924af4edc9fadcd1e9ddb52889fc3054",
    "signature": "0xe66fed330c6c28ed920f3bfdd3dcee55ca12f868dadf6e964a962ced36d2e34f6969c50cda84a4a8c7e4f0bcb4376a66dad6080cccb86eb5f221e3741aa67e7b1b",
    "signer": "0xE7D2d2e0d0DdAa60c6A016b7271C1F9E865F5F74",
    "userId": "808443903"
  }
}