{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "355113",
    "entityType": "User",
    "nonce": "0x5c5a0c47c1d4d6ae335bf0cd7414084d55a5a7a13c5d2bf0190e51858391a9ce",
    "signature": "0xa3d21fc87df21cbfe250ee40c2999ee6d9f46452121e14da951bc403aa0ba871235c4b4259c873a0a5ff01c98ed375f402305aec6386c4e3b09a310614d506121b",
    "signer": "0x168ff3b3F21912D4d676468A80Ee2af0E2F24a59",
    "userId": "124431641"
  }
}