{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x28dd11eef7e72bb48cf81067c126f728ebeaa172b7cb5b627bf157401b4fef73",
    "signature": "0xe5432acbe83ece6b79ccf149789c90c079f464f4c6e829ed1af0a95e5cd8523736d75088d642f139f23affaa621f1dbec60875b2192e336cec5972179b2435871b",
    "signer": "0x343c684b1503ec463E59aea4066483EAa82F8f3E",
    "userId": "336711311"
  }
}