{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16654",
    "entityType": "User",
    "nonce": "0xd9b4cdc578f089a2c128ecf7496c2e5ace3c5c9e3a0725b2c9cb6c918c0bd587",
    "signature": "0xfe48c8266bae8672641710d15e54bec973a33b70192d06c2f673787cad97b2b541cdc9216c1e5c08ea99ec87f712e7bdb98019781bfb7a802a42b105e5c353461b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}