{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18439726",
    "entityType": "User",
    "nonce": "0x60e6dc94262bd9cf928f50313817b7e44f4843982a40bf74eb885b92aafc1718",
    "signature": "0xb273efef47dbb6644f5816997484ff23b546f4534db879cb45e33f8da5b86a84779eb1ddc62902c4df0b434984b03e04c22d88bd1c20f163377832e0d62e98911b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}