{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf0edc557530adb0823f37c005afdf9b1e4e10b02daedbb8d5b86840519006341",
    "signature": "0x8bf789d823cddcac901d40b094b74b5372adb62d8c4c2506d7d23e35be99c56c23a765eb4caed9f684ea959335e11942b85669668bfc4251e30824069849d62a1c",
    "signer": "0x0D29e890aa88a8dd37e712bbFA353Db83b8B5D7f",
    "userId": "547890227"
  }
}