{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc241b35f53fdc769203a85b8842467b4e8fed1066a0c713264f6dd8d94440ca4",
    "signature": "0xd2af1cef6e58ebb455719ed082708cde706df6da1a205548b90e55c4ac599c3c032da3e6f408be7356694c51468f21e96c4d7375ec0ed052c7c126cc9bdf4a461b",
    "signer": "0x5a8fD302C5B6259108566B86c69890ed706d0b21",
    "userId": "454212997"
  }
}