{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "342366",
    "entityType": "User",
    "nonce": "0x2fcbd87c5883d4c30a04a6915b0430d380a4a5092a498f00c304f5a60984f641",
    "signature": "0x23278c0708a8d7fa734fd7c764a4b8a503b22df36b53f248e5cb35857c8c3da674984c722e65c16198e9cd464fec75361fa4f9eb883f28b81bc8a78851d210641c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}