{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "439214",
    "entityType": "User",
    "nonce": "0x45da6c272b50e5d05e4d116e62110abf7e8e331affb4fa18e636e9cfeb56195e",
    "signature": "0xacb03b9956ba210979eb224ba58753511149106d43402cf1b9ecce64e2b4f6466d8e0bb4e8eaf386a367f3c9cee20fbef02b89541d298aaea4aa61a69631b90a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}