{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304048",
    "entityType": "User",
    "nonce": "0xd55b788687ac0ca4acf371ecd9823702cc6e14a46c527d6caed715560bf403a5",
    "signature": "0xfd0b54a7fd9ed903b3a617e1c3e4356a3e590cec75e5e7d02969ea7ee47aac6a2eb5954de507376f9484dc57eb65ce5b42ccdbe638ef0e2fbdaeb97cbb127c291b",
    "signer": "0x3e16afFf69eC32202c1B755Ad919C7aA325B7aBE",
    "userId": "902811065"
  }
}