{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "778779",
    "entityType": "User",
    "nonce": "0x7a684fca13960594e550f1bc377c74ca9a3d8aacd4a8277a323bdd2b6ba1d859",
    "signature": "0x34faa53bcf3f311f6fa0f1c975c8383ba55aebbba54c26adee5a3542cc2df0ae52baf58cac58260f09e7ce74f5732fef97fe126614702dd80ed99ac5d00a03601c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}