{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd44f914eeb928bdfe03b438e588a4856c602ffdc2eaa483fa4dd33757982d2d8",
    "signature": "0x920ce5af362a73b7dd4dd6305c5a393aa962932c19232dfd302aa24fac91449a22c3c62eec4253b543b1dde8a2aa4ed73802c212873b26bdc7f0fa36b5aa7b671b",
    "signer": "0x984EC72589412a392cB3451eacc39b4c21aeB19F",
    "userId": "147459552"
  }
}