{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "215320",
    "entityType": "User",
    "nonce": "0xda553eabb9935a4085e1bdcd1925d1e4ae25cef2bda52ce54f02adcd7e21c38e",
    "signature": "0xd43e0c52ca27b0fe0c407de7e2d37c0806150907ceb722db9b3f11199b4cdb74708d693b2b03f4fa833e09818b6a60fade384d7f1e456cfa3b2ee4c6e44e9fc21b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}