{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "94219",
    "entityType": "User",
    "nonce": "0xe4b574160293a691bceab50520bb92148dc6abc7ebadff4a3484c3b190618dc4",
    "signature": "0x21a676caeeaffc5f990651d9e544b6033b0ac520f97eeb6f1e6503adb5ab70e8535ee35b237327e29440ea4ede9070603665a2ea9a0bece0f7394bda745ffba11c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}