{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "940831456",
    "entityType": "User",
    "nonce": "0xbb23a7e8f0fee3cc72a207840fd958433e483cb362b8ff60e8ec02f2671b794c",
    "signature": "0xdbaa4ccd8b5c6e6aace476fa10d89ea9290493aea0628d799a1c098c5d57f0826dd5cd2d8f809c7adaa1438251c8d6b27bf2fca43004e3f8df19a2127ac0e3061b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}