{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x2efc46bf3e2e65cafef9f11044a602283a5feff2910f7c29922de7129f11bc37",
    "signature": "0x04c77462f809817279e760753fc069b04678f5b7482e6ab370221d9634c6c5222b555859136eea5922c5bbc92acdce256fc9416a7f95b897de2f9d868e31e03a1b",
    "signer": "0xF54ACD9868e9906094BBEe9817413658a3Dd38A2",
    "userId": "399415777"
  }
}