{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304857543",
    "entityType": "User",
    "nonce": "0x5dcb722c5856cbe8e08b0e3702c380054d06107fa08e5d09760731a53b91f598",
    "signature": "0xe138e641b72e1c39103c5b34fc62e62272bc0c4a2d0d501275c20e349a56ce67452d4772aea3e8986a62583460b861dbf9344d453db520a035680ed44d24dde51b",
    "signer": "0xCe146265e280c19E5B68400a59f1a07B60408aEc",
    "userId": "554250826"
  }
}