{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe98a30bb3ff53e1ec099b9b6bddf49323d73b88af977f036ffc4ca853dfd7714",
    "signature": "0x3c49cac22f0feb271660e7c15657a433dbeed2230ec0ccdd3457c360a61191281925d080a13e2d778379bafdfbc348e6195f255cdf6ab66efd59ae9b6d40e7be1b",
    "signer": "0x9F1EC68de222093e6254456C6Bb096D2bEa0A0Fa",
    "userId": "312260121"
  }
}