{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "706851",
    "entityType": "User",
    "nonce": "0xd662ea80edb72fca7a53ae5fe3d86d91ad8dcb9b8c4008e40c4180d60b6530f3",
    "signature": "0xc4275cd90ee158fe138245867096a035b0c0973e94788cfe5c16aabdec7b67b74c6ab73f728a628a87f95584bb82fe707a6a3208c1b6bff5acbe28093817f31f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}