{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15115",
    "entityType": "User",
    "nonce": "0x0c170f4c933c321aa9ff63c1d3086fcbb7d36b8f7e1373f9643bd1502789a015",
    "signature": "0x8d40260eb5026b69f31224242f82a6290a1af93da3ea712ccd50a17ef135340c624c6005bcfa590494c88989662ec7e777dd9281d99e865e887f3a42c167db1d1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}