{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x34187f5a6dd8209f6f7a353d600b77eedcfd826db7d4e8e7afa72ed3c89b39c2",
    "signature": "0xa244e74db00e94ed36e8dfaf69755e12a8656f91906c43494a49f68a4cf73e070eaed47989e83f8c3b8f974c19d50c2043763aaaf2ec1f66483d85e69af3e0d21b",
    "signer": "0xd98BdC1941D7f6C69709E8B28d51048957E3304a",
    "userId": "758566497"
  }
}