{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xcb48d0ec65cd471afdea84d7a1ea93df07435b4a6bc8d9b1210094854ae86ed5",
    "signature": "0x5c458a9e05bf4b9f9b5d97fad58aaa5761815738de8b88079cb56c9ae148c7610ec339ec81e3286b4c1bde1ede4ddf70cba8ac6f048c28dde030ee1de9f10b981b",
    "signer": "0xAd3852b57Ce1853b5633884cCEb6bCF48AB644Be",
    "userId": "608902598"
  }
}