{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xfe65545a8600eef5bee648e60dfbd764841aafc5642d6c5f22a8318d62b618ed",
    "signature": "0x2affad63e8870240e02999b01eb0d484c2e79dd394d966aa6be950c41538993075e5db41cc52582534f21a1bf23f1e6061a7e0ba0469b17aff012d21dcf3fde71c",
    "signer": "0x601c37f282e2bFCf89F4B079db01Bea22Bb30191",
    "userId": "99857"
  }
}