{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa25a7a4dd6c520ed0cac4c8d6e54e14aaa9a5e78449fe6b65ee7e31a24c11891",
    "signature": "0xd8ceda828e96a63a8c958d205f30ad7c4f4a4af70c13c5b4b8ab671bf190a8973c23a787d8ca552628c409783ea317ed548f89481477f7646ff9a45887a516761b",
    "signer": "0xE8e88AADd62e0c8385d7fC40418eF1c15BBF5916",
    "userId": "264649929"
  }
}