{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "643832687",
    "entityType": "User",
    "nonce": "0xae949203912c0ea637275413cd013400f54ce759cd1c90c9276e6025e47de775",
    "signature": "0xfca813b1bad0659373a6733162ce18fe63ccd76d7c3f4d5bd6894f6ae5ed6769523b377fe282d53bdd5f9022905f22155e53fc23b8bea66476aad2e207e6ba351b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}