{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "500530453",
    "entityType": "User",
    "nonce": "0xf05bf7e9cff0b8d6c8c1e95b9149afff50c888866bc6d38e46fc889394c6f227",
    "signature": "0x1affe6f6f30ba08044a3424fa8e0c58361408376482429f0b62ae7e908436b57761589128e623bdab1e0f02ef3b79ec5e01bc2f713124758f74061b97914cfe71b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}