{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "17721",
    "entityType": "User",
    "nonce": "0x2f2463e73ae529e3085f10e90bc673b877d6c320336d8a846c548ca70c433b01",
    "signature": "0xb36d361a3b5526a22925fb72059020e2a9c1c740645b102113af7d7dce59c82f5193d178056ef3e1fdbfd5c1c1bd3a87d2137ea8e1d4cf95a498204af93422301b",
    "signer": "0x367680E9B4EfE77a6636091FA6c2c71749Cf7C60",
    "userId": "40274"
  }
}