{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "44512",
    "entityType": "User",
    "nonce": "0x4268e7458f211f035edb7d191be0c738e8c1b15a1e4a00f1c068bd2e15175fed",
    "signature": "0x247d21575de9f6a82e0d012824c2e98a6b9cbdcb6bfea42e5dff9a3f2334d1762c288771b0aea11f4a819aaf7ca97a403512ca465c47db34447d5ab7b81478681c",
    "signer": "0x3CEbf9bfE1b24355cBC348701860d601E226Dfbb",
    "userId": "172240066"
  }
}