{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508186998",
    "entityType": "User",
    "nonce": "0x8ff330c5ba2f54e34adc9103c65c7ccc20d0652ae5b69761c52a54e0d9d32f2f",
    "signature": "0x2f4006657cc4e081d56b029f9caf2053db7969b295b62b333ca882cf8d94618874005879b1b9a77eebe1af876031f2bf224a36b4ff9da8956a9a29c6282cd2c61b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}