{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0x12631708cf3d3aececae4272723efa52bfea6f1d469cf0f409afccd4fda23f16",
    "signature": "0x39f9c0448249816ea147309584f86290771e8cd25ded85b100a08333f31bfcbe4236c19b2c157d6da8c93083efc15d08be9fd47a377cfd5baf2245e28372b2761c",
    "signer": "0x68A81e244373071022906C5BEF0bcE468cFceEF0",
    "userId": "67066"
  }
}