{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301606",
    "entityType": "User",
    "nonce": "0x31c65ddb56c96eb5ef09025d07602f7571914228e21586845fe96078731e7233",
    "signature": "0x3f63bd8c6259ae6c1006a48513c279a83448c9fd552aaa928b609b39c1e2639f79413eb8b3ead34307562e4b7dcfb0705a03c63757d4a4177e3659e381a04b8b1c",
    "signer": "0x208603ea5f8A301325eECF05FcB0f8980e619b7b",
    "userId": "535885879"
  }
}