{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x91b526a9942ee704e8b75cafff521d15a7726b281fcc2aabd731f7433aa4b7ec",
    "signature": "0x658bc5cedab4129a1f6b60366e0969bb102f1232afbef9f122ab95af275602e07cc8d3f925505f70ec883a152746d54f94eafb5e6b57368931a35f714122418a1c",
    "signer": "0xd64e8312B8Fbd828eD5a12fb49482f5D585b62F6",
    "userId": "880286427"
  }
}