{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5abbc6220b8b92c54f51a66faf5c37f391a51b90244a945ca873ae3dc58f3400",
    "signature": "0x9b9553cd79e69b654f784786fb3ab4117db1cb91b9623ea1da9e40a7e522f4be43d488c716de7a1e1c39561ea68ab3e03f17d1072b449905db5d845cb347058e1b",
    "signer": "0xFF59cE18b2b9EDFbE1F524392Faa3288d9937758",
    "userId": "971034959"
  }
}