{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa82bfce2668f171cae9c4431174b807a071c42a74f2874e44aba55705c72c6ba",
    "signature": "0x89df5dd332cee8798ba63af5a90f1af5d2764ed03241d51e71e3e1fbd8b9989433a94a50833eb94b9d604afa1980d6360a39e79318b333ab532c0c49ddd915ff1c",
    "signer": "0x869Ae946695c9e6c037FeDef54639c2d2abcd2eB",
    "userId": "498183456"
  }
}