{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x421123a2fefcc244769c5ea067fa9035b2c55fd652b0a84c5eaf636524eed1cf",
    "signature": "0x6c4c219c9dee54aa7f1e59a70f378a984b330927a383c187ec4a514fd7fe07587a0c7e89941370230f9adbbcb7bec8da3b46a50f1a955578cdc356fcb675949a1b",
    "signer": "0xFB391B9398f78cdc98D3eE491A3139c9fea5Aa29",
    "userId": "212097339"
  }
}