{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "37939",
    "entityType": "User",
    "nonce": "0x2d2828b3fb3954fcb258649762c5629d7a363cd4d5fc57dac3c6564b8323a0d2",
    "signature": "0xe25143d6171ef2caf7d55b987dbe6f43ec07521ad337671dcb9dbfbfa8cbf38a217a37529a4383d39fadb6b44dcf02c6b311c2d9476bf4cf26f98878ec71de741b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}