{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "823639",
    "entityType": "User",
    "nonce": "0x7a945ac19674474d45231e113442607f5a370d63a2fe1d9ec69ec8563e7c3a3f",
    "signature": "0x361bf3971e0032dc83bef90174701c9b8588dce9476dd7b81136a83c25511452208f00064d74c6fe1ddd03517f826b842520cc727ac6d8f7222a32bd73fd32d81b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}