{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "783705",
    "entityType": "User",
    "nonce": "0x535e4cd26a17a793f8bf0150e0b8a76651fb095f2b468d120d9290b817f82778",
    "signature": "0x5ae499ffdfdd268e5fb8c999d663b3175cda7f246846c2b7ae62649c40d846cf0beb37735a317a7782480f547c980808ad58f8f300ec72d22bd49f8b0500348a1c",
    "signer": "0x2F87bb373089af6C75e3362077A0E52A4779f72c",
    "userId": "582715056"
  }
}