{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "661902330",
    "entityType": "User",
    "nonce": "0xab85c3c349e071e07a73c6565950dc159471bba7a12c391a245a6e039b4d24ad",
    "signature": "0xc2ea87c05400a1b851e31b9d3774d8fda0a2806f5263bcc1dc3486f84f7866501f350cf5e32a8fe1941f84a08e6a2ebeda95e221c2c2344b40fc260218410a011c",
    "signer": "0x809Db232a6131f46553BA571FB17bFA2cc58aeE9",
    "userId": "351386054"
  }
}