{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "338282108",
    "entityType": "User",
    "nonce": "0x18d4227d439d4e470bb25d869ed5d08c3afdad02b02be72af0454726d0995cd2",
    "signature": "0xf8c91395bf23f98a4e8df7e86ff649d683c3b6336f246de6efa659c8adebac693bb7b45368a21b1eacae296c3a4fc3211fba79472610f561f811d48895080f741b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}