{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15612",
    "entityType": "User",
    "nonce": "0x2af3becd266b2cec11d1ed2e92edbd4ba9d5a9a9cf392c618f435bd648ad1cc1",
    "signature": "0x643b976939b81ce5fc06bc56a44ee0093961cf13ace880ec3c9820b0abe16d573d2a3363db2ca92217d75278f8fb9a138cbf479534b7273411b253cd7ef41c801c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}