{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "372587631",
    "entityType": "User",
    "nonce": "0xe5bb074a7bd0dc45b009385fe92b32a23980cc659a78361476af9f564bfd4aaf",
    "signature": "0x12856eccb27985d96d085e7d1196ab688adbf3cf780635e9658c6843c6e2216607793a122bef75bdf96c5cd5f9516b022bf0bc454e38b193c59b6030b844ac541c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}