{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3df7e80b37379b7e5a79704c125b5efa02011ba4eb67f042c7c77f14d2e57eef",
    "signature": "0xde7ef933c75ae8333a608e2f813cfde153712d9676e89001fc72e1da6f9bf2b3054b768c10512bdf0e4886d339d01fe0cf86cab6453833a8e606f68c400532191b",
    "signer": "0x7A65D557F35Dc903ab72b65246dff66EB0940D02",
    "userId": "94757321"
  }
}