{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "330534898",
    "entityType": "User",
    "nonce": "0xb393eb6a13aa9ba0980c5994b8424c6619d4ee6824a50c8b18256b6593c247a0",
    "signature": "0x01afbe6f7b3e0f15715aa8ff59b7e0012937b406239e4e62ceac45e2467a7e277893598046394f319ecf8653fad546d7f7bac5a0bf23dc8fa4ce4d36026dd77a1c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}