{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "222",
    "entityType": "User",
    "nonce": "0xd648063ff34784af79274fc7e26a3f6a5f9bd3b9bf011a15a554e9b36b93f01e",
    "signature": "0xfebcc0a7d51104dfaff15d3fac406ca265b82f8c62e7852789cc4be37608380a41b65276b1ddd660bb6c20e8992e951d7d924241f0acd0ec8b177ea46ca455411b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}