{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325980081",
    "entityType": "User",
    "nonce": "0x21cf14c228e1019672686997a7ef2b2dd71693db42964ea019668bd8ab878fac",
    "signature": "0x5cfe417c6a44240a20eead0f24b4348eae5ffee8aad36c44b43258f83c6405b333d4128bb56a13cd1d1fb8bd14bfc080c9ed9ac2f23b73aecaa511fb3961c5761b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}