{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "342990",
    "entityType": "User",
    "nonce": "0x5a6d17599f84dafd0c382a32de6367ab432adb11a7068a73986edf9da8913502",
    "signature": "0x4fb0dafd8de071aac74b581837752023f06c93628048b095dfbfee13de76077d54b8f099f13313722df0da3dbf59d3b77b72b28952dc9322bcd649f49819e0351c",
    "signer": "0x18356cfD8fCEF0CfA9c1317D9538cf9f94734021",
    "userId": "855397745"
  }
}