{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2928f9d5458c9106e9fc1006d1fa8844de80321880977928ab3b1563e1508f7c",
    "signature": "0x1e25502f336f8408bddaef05758b07d53a04f24025f38304408d56e3361b20a22d9d7efbf5ebf480b98f825df897347f1daa993197a9b853d7daa5ea861091d81c",
    "signer": "0x81a6976298DDa0B267D3c5C2581EF2671a909f4b",
    "userId": "410531907"
  }
}