{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "22471",
    "entityType": "User",
    "nonce": "0x592e0df1673cbfbb78a9385abb3f09621ec84443850e975ea658db75fc2efeed",
    "signature": "0x5c1cdb6eba00251fdecbfeba3e6acf6404324d28d02fef2559a28c42ea4425cc76c0721af8cf65de9f386484cec33dfc6656bb87d999c53f4f66d2a686634e971c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}