{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "868248368",
    "entityType": "User",
    "nonce": "0x0008e1961966fd763917c153bccc84cf9dd5b7a7742dbcff0b51b641c87a6b78",
    "signature": "0xdf1b21cf9dc019df3a553581ac6d975d75c6f98bc77243a4fee2721948f05da91cb337d9d0109c94379544e77fe0146bfb1724c77fb3d960bda5913f8e91261c1b",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}