{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "900066767",
    "entityType": "User",
    "nonce": "0xdbe7ef1ae0b5328a55a374aed175d2fd95ef0d891777e48ffe1c9ac8bbf665ed",
    "signature": "0xd44410227deeea8dc5205e1727f46636f9c779a95d0af3aee7cea5f681eeafc50c4e11ef64489b288bfc0e353f7419a2e64bcff4bb06a38e94681deed07bd2f61c",
    "signer": "0xaf687f55Ef60bd4a787Fb6bF971B886C8F6AFDe0",
    "userId": "986541736"
  }
}