{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325172820",
    "entityType": "User",
    "nonce": "0xb5aa4a672b6703bdd58778784d9f228cfee1934d6c6c95dac73679437f4057a0",
    "signature": "0xfdf45d3d47d533cb1cb907df1277d8deac76f3e056dfbfebe662ce1289a4e3a72bdad22fbaa92e07dedd9d7259a1f78758b85f0230e032b3cec0c545666a74cf1b",
    "signer": "0xE18f37f193553F7bFB76f10C386b65159Ae304E0",
    "userId": "4510"
  }
}