{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12235",
    "entityType": "User",
    "nonce": "0xbbbf90d825ac33382aef98dd472eae705bfc20395db85b25833b4097dd954775",
    "signature": "0xe09ab45775cd93c9aa8cc2e4cc2a37c322d859708fc34a00adc7f1c475cfad6219a4568b0c88987cf1a7ba34c4cd13ba041f6adf47177db3ff036f58957e43dd1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}