{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x42ef6858749860aba568d55f8b59b1e912f3d70530b0c8d36245f83749edfa35",
    "signature": "0x7ac1fa598eb6da11d8bd7bfbe7732acf2ff208b62ca1c3877a8901188d0726ae770bdb65d11634481a57cf09092e2c2fd4998f4d13f79d8e6b0cfe3c734dd8c51c",
    "signer": "0xD637C26d48E3613D0984E7cCEbaAA986bEC27368",
    "userId": "816966804"
  }
}