{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57021",
    "entityType": "User",
    "nonce": "0x769261480800edc6f13a9c65cb8a45eb5d91ee3ab818c7784649b2094f0db8e9",
    "signature": "0x09934018a670eb5845f6bb8090f3cbc95a60919c3b52a04ef6a34f1e63a49ab127db4967c9b7ded8ecf37eb9f9cb9c89822f3a414ae9e0ed122c6ea52c4d314c1c",
    "signer": "0xF40Be525727aa96Cf61609f0A493d9E677f73a33",
    "userId": "159460377"
  }
}