{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdbf57abb00f470ecbc6e973ad2fb24ab4935892f4ba15a6fc58fa4a4858dd36b",
    "signature": "0xd2b1f8f6b5373cc53bd8a02883e9789df23acb70a9fa2cb7e5b122d5175d8c0023ad80a07f59e0fdfc477f0fd6a9ee38d1237f765a62e663cb24de0e7641b2e11b",
    "signer": "0x9cA09F22Cb015Db5Ba571d1C6654541DFeDd80E5",
    "userId": "530745737"
  }
}