{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12615893",
    "entityType": "User",
    "nonce": "0xd78e5a77cbedc7617f9a7e9fc8da4c739404cba124b16203e57027372b9c7d80",
    "signature": "0x1743374e55834f2ab1506af3cb855c166166fe5331e138362b28b186b5f727ba352dab50ecfa437957f76ac6405246817099c6cfa05666d0d68dc4bf110faf771c",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}