{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0a95d9ffdb192d5fed22d70ca31623bcad770a522dce95077d01c81210f5179a",
    "signature": "0xc4eadef3b17120307430fc85e4d70c024d4e69dd2cf5a241d23e1bfac094c8a54b6be6f84ad7fdab836a9376d1e9d810147f1c356b57b5d1a79c4ceaf83b376e1c",
    "signer": "0xD557322f4C774bc1d087C164282a9eA16f825e2B",
    "userId": "67688885"
  }
}