{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbd420b4a276227aaaead4db65852d82134b84915afb3f2048f5740f72f31aa29",
    "signature": "0xed4d70c96dc42128358cbd9cc9919b72504e8b1e4bd5e9004ef227302d41dcfc48d4cfe8c93e81d4074793cebcc8a794badad56aae8a1e7969c3676d7a3884731c",
    "signer": "0x833f6B405313fF5e5e83F5ac753D6D973d8B1D1e",
    "userId": "129418174"
  }
}