{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1d0a2d705b5336d61d46069ca2456663dbeb5a77aa319d40f14f07ee6a9c64a5",
    "signature": "0xb7074e2e27f1146d25b3657a6f2b01bb99271f6be10c665e1441f3868141f43a420e58ddf91bbc2a2459abad58c9e9647cef789ce3aa3c59830dea4224e596fa1c",
    "signer": "0xc010189B56dc4f007Ad13fbF27F6224d1F951393",
    "userId": "454551282"
  }
}