{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12",
    "entityType": "User",
    "nonce": "0x93296d6890256d7b38d7d966650a8cdd5e55f71d117129d7fbb719d8588639d4",
    "signature": "0x19dbab7c3f4be7fec9b6b4a671e9f83fc9622b295ecfd59b8615f9685283bfcf73117a70dedc7034cc062e1e697dc70356262c094e24cb9a28bb8c32aabd2e671c",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}