{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xe0027740c6d93ae4ef600789c35046b088d939c4ae98a9d5d46ac905d1887b07",
    "signature": "0xd24586937a763202acd19fff3015b5cbd40c11000da17d42a74228692e9b06651cd4ec80f330f510d3b21502ac4dca4927bad6a04cacc7daff37057a29a421971b",
    "signer": "0x1265f0C62f63e733ef6f5A73800dAc6eb1dAA462",
    "userId": "551524903"
  }
}