{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73438",
    "entityType": "User",
    "nonce": "0xba3741dc14b3274de5f9c477b878d165d4bf208e2163fd3d7bf06f3177248e89",
    "signature": "0x138a27d94d9d8400394128df6e8f48c05403168bb47d338ac0ba765be846f54856a3bb437bdf4a1d1c91b97d2d1b701606c3db1ef33679da9feeadbb63fffac01c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}