{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "384706",
    "entityType": "User",
    "nonce": "0x9609896c6357379d2d88502f17fbfe89622dd6ca3cc66ee3e124e08534174b9d",
    "signature": "0xd699048083c9926563034dfd21ae4c7dd87c785f3e6ac1535d7be97c48228f9c4e6235868692ea90cc1397661cd2fdffccb4b5ac526f065106f704714a172e181c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}