{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307894",
    "entityType": "User",
    "nonce": "0x0ce0c071c5babf1e995d77aedf0f41bc8996df8824e6cb68d45604038f490baa",
    "signature": "0x84b7d4c3b98e698a13de866e03a0ef00492eb314c80b2518e8b8d28406e27a3f6ee14306b9ba957030acec769a8dff0cf6cdab6fc88446394d07a67dfe2fbe6b1b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}