{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "283478",
    "entityType": "User",
    "nonce": "0xfa8cf5e575a5e0a735212b4d50bb275f80672529ed2dbb6ed452c48dc9b29ea5",
    "signature": "0x7731a7b340280420ee412d7dd32dca159e4d8db25845e44dff2736db03f65ee91a413b4d398757997b5e00d46e92878cf23d60ade9d688d33bd861cac17e44801c",
    "signer": "0xEbf223E3bfE29c251Ee19f0d3515DDDA00B0Ad60",
    "userId": "2018345"
  }
}