{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x962a1d57d4cd87f2832e6fb5ab55bd57a9bdd7c62f5731e3d5906c1457770f78",
    "signature": "0x2b38afded68c97da52995222cce9649a5dfc105da82d1aba0fa9b94ea91e13284fb0d08fbf0ee8da68c7dc88295603800b088db08532e254ba3ee8e4c36083601c",
    "signer": "0xB9e0A0664FF281D9aA9b8e486a20e9F668B03729",
    "userId": "41134577"
  }
}