{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x277d5d837ad6333051fb6928f7bed8dbfb9b05b63be5659d8b860ef6dd3aa93b",
    "signature": "0x8fd490d16a702a58929e3f501860e1cf89f4743e6174117a6f00234f514f8cfa2db7be587df0a9817d3d71407bffdb32e476c842b71b8c00daf9d5508eae1bbc1b",
    "signer": "0xcaFF37d75de2d0273bd0e1DE9F138f4b1809708E",
    "userId": "784879487"
  }
}