{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "208489322",
    "entityType": "User",
    "nonce": "0x4c85ed95f46438bf02ce5a69806ce34f3fbb6fe3825996df2be9e78747911faf",
    "signature": "0x158d6ebb83802345226b5641306728f907c24eee6817f8318770743e8fc0ae8808abdb6f292a4a1c45d3d58b3bb5ec63386eb43f30959e7f3b7f5f2eb1fcc1f31b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}