{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x725c2d4197a9be6373a0a22e2a0046346a7b321d7e4be433fe4233c498d2bdd6",
    "signature": "0x31b4861d446914f5e1f775081b68b103fe8ca7c907fb19e6a8300fd6380811281270111d237539df0628b3f3cc1203ecbac6019a35613819a5c658084ade2d2d1c",
    "signer": "0x40683F9eb9281D766ca0e616A897BA059cDD7aF3",
    "userId": "380949464"
  }
}