{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43487",
    "entityType": "User",
    "nonce": "0xd6eb590cac4d9ec45b4f7cd3ac18ade7e64950a58c3b191badae49875a92cb3d",
    "signature": "0x4343fa53b547e60a676ffa029ca8a95b542def5d318d744a300ab4cdb8952b494ca52daf27b070d7f735c4fa79a0d523819ced6fc48fc050468a0b21a311baf81b",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}