{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "324542",
    "entityType": "User",
    "nonce": "0x77f045ce3c9fe086534e04863478ea410aa8fd4307afa74ca9db6cee08da5210",
    "signature": "0x5aa5f31cfca46de6be8d3185af457637d8b29189d9141b2ada0210868f5059ce3df78110d28c100c2c32c4b84ca436f04a224462323bc88b4fd0011886fb3d891c",
    "signer": "0x375963f281CEdF4D9D180496F80A256D574daBa2",
    "userId": "981824750"
  }
}