{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308159083",
    "entityType": "User",
    "nonce": "0xafc915cc78f8d8d60719aa03fbe71e71bb60269d7ea57248aa4cd6ef0010b2bf",
    "signature": "0x538d59d362737c8758e76376ff56d929f3bddece593cb6dc8f21eb6747cd14c2457c9744a24d597cb5557a0334ea70a3da1584f8ae82a916798eacd7df5fb13a1c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}