{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2645544fd391ac7616f5696ed91b758089fc84d1f2948db11d34a6d36604bbcf",
    "signature": "0xd812eb4b65671d1a3918b1e7be5be09b5c5facd18ce8d8a1dc002c6d967e7ab167d4af68c8a02e9992f700b2d9b85243e64250214f177c8b47ba7e54ea7ceda31c",
    "signer": "0xA0422BD1d310E6172692584428d64c04D4185c7E",
    "userId": "969111903"
  }
}