{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "951644728",
    "entityType": "User",
    "nonce": "0x213f9980899a188c04421f82046cbd5b88619bc3848bb7c03b6c5f120312632b",
    "signature": "0xef139a591bb95b42866f2568e9f14e7811eb400e83c8bdbe22b1fe7d1c4ad64616d8c48583d1cb195e3fd166125d6e694c8f29aeb6724992bae43e95bffd67231c",
    "signer": "0x12705C8Fe8CE886CeFEFa0d4d46E906f2c35C954",
    "userId": "477934274"
  }
}