{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43773",
    "entityType": "User",
    "nonce": "0xa2de3e61afc361f50b6cfdc354652b1ed8d61b3bd9ce97d44112a45db9309490",
    "signature": "0xe7560e21080495393006fa4e55832c68f7a3abb2a7b9816182dccdeaf72833ec7f698bacd13e02dc6faeeb738d4a85c87aac1d14f3be1b97ca31b859c8c8cb5f1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}