{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13546",
    "entityType": "User",
    "nonce": "0xf8b8e43054a43e316e2062dd0c660e9148966e193e80564fb9a3c3c62b32c048",
    "signature": "0x581b6e07f4edba8f3ddcefa3fe4cf4a59f98c40d82c92e099f092fc86dc57687731dc6dd40fa9eb16555002a60ed3baead4655cf808c8f8aaf742fe14b02a8841b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}