{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "310089",
    "entityType": "User",
    "nonce": "0x10f088830de04091727cdff54aee68e5727f6a33b962c0193ae1e6de5f64fa12",
    "signature": "0xd8bd054db36ac7c869ceba5cfffed922a4266e15b753c230ce3c0d6c4120a32e49d2606cacc39ed49acedf2b4e5af9b85b57b1c79b03bc4aea3cbeef773201e91b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}