{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "522150766",
    "entityType": "User",
    "nonce": "0xf407ed8b0e0789d7e687d9bbcbce9aaf4b0dcd2364d3ce968b2197dcfb7c14fd",
    "signature": "0x9cfe9bd6db2d8d550bc484a61469396d7edeb43328d23c83801b56ab0f04183506e36f5743e6b868fa59fc141422430daeae286484d199ddae3f343d4b00f18c1c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}