{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304698",
    "entityType": "User",
    "nonce": "0x6d2d63c8d0060d748e885c25cf10427a528ba22707c267feed744ea7505ec7af",
    "signature": "0xe66dd9d6eedc69619b55bfa838203fdca4becb67b25d9e03edd28b795bf6c882049e73e52999c62ae44e4bf18cb216f5175940bb0b474dcf01e8702aaf3206f51c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}