{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x52310614d919c50cc2400b7438a1ba297e7eb9a4371c38250f6044d1810cd2d6",
    "signature": "0xcceb07086a00107d38f655b17af85817798790ca2bea84790e9b3201f321646b3767e960e113fd43ce695294a41e4065eb48be808547496649d44637958da6981b",
    "signer": "0xAF064a1a3e9cBBf90A855D71175EaBBd20d6Ad69",
    "userId": "324923408"
  }
}