{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9ae82857cc5fac994b4e29f81b61148e343e62fb1cdd00b44ad93a9f074f6acb",
    "signature": "0x7d9129a5a8d5b8273d92c5a52f9ae689959364c248d36346eb898abf0bb091d31a769557a21b76b01dae3ea40c77e1b196237f8f6a834103826e130e1de9ad4c1b",
    "signer": "0x784332c3dE17476612Bb5A8F70d9E1F103780C3F",
    "userId": "577744761"
  }
}