{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7e4bfced66810f8e981fca2e073a733abe742010264f649f1ba226f1ffcb3b5e",
    "signature": "0x4cfeeab1c452154378f40d4c53588d87ff97621bd5fd11370bcde08f08535a987935c67f0ab94cc126deb9e37463f9a5abfd160a98474d56ff2f28248738a17b1c",
    "signer": "0x4a09dF712e225c91F8695c12F1eE5F0DC78Eda7e",
    "userId": "238409780"
  }
}