{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xac335fcd5ba21eb75179ded2d62ca8a3913064c404674d2cdc0ef672936be08b",
    "signature": "0xce68ff153b9429946a62bcbcad2eb86a49bdbc7160623407db1b69bf0c8d8a684b6fe4f4e71a18c99be4816db63e1a42f3d1acf8b72192a462d8c69068c75dd31b",
    "signer": "0x14E84CB5Bc3C97c9DbA697BC80b4548AF0cb58C1",
    "userId": "922777888"
  }
}