{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "424817890",
    "entityType": "User",
    "nonce": "0xe1204a372f3cc6be54014dda799da922c92786ea4db1314116f1911c792e1330",
    "signature": "0xc7374e9334931dbdf33aa11692a7ffb0ad024d1c32f2145cf170701e09b314934bbe1084a5dfedb9c0b710f88da962b8d4069490e5dd94745bf7895c0313a8c01b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}