{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x621fe884a06c969b99cb99661eadffc604b9045832a385b2a484b2b6c710d6e6",
    "signature": "0xf35660af6d4dd5179d575cf736a8a8a48c482b58304950fe237970efdd8c97d342ced24e47603fe9524ab7ddc4752290d8be1c7b40fa8d569528363b0ce42ca11c",
    "signer": "0xCDb8F390F2d5D6a1687a289dFDE48b06f3403872",
    "userId": "176094510"
  }
}