{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xf9bfced8b53338cc43c42244d78c8802c4a1a81c29a4cce402070b22974a490a",
    "signature": "0xf174f7331d81587af3cd69bc55382fbd56073cbb399b21641f6554558fa439de04f7bf2711ad98ad194e5685a849ec37fc56784019efad633f1fec1344f3cc651b",
    "signer": "0x4b1189bC8Aee2eb6CeD0578e2f69157Ae9DeC090",
    "userId": "67696412"
  }
}