{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "680645058",
    "entityType": "User",
    "nonce": "0xc6f623ebe71e6a79e72e0dec0402af68ec3a1a6fb5fb6104a0c41d6f6cd51baf",
    "signature": "0xb29e7c79b2a1f8dc01d8b47d22bcfb70d41e0245d4990b62c42c31d6b9c61de96b75657cac8f93d4122265230912465d303f2f38d9db09b7f4d57485e230e6f41b",
    "signer": "0x0C73Cb0314281db439083e5ae4b1443Ac537a76b",
    "userId": "346579799"
  }
}