{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "994858715",
    "entityType": "User",
    "nonce": "0x54c405f631d6433714ccd8ca91f8e679adebfd53fb3216bd877538c5109aafcf",
    "signature": "0xe8ee3c872d717dc8de968a52cfd8ab5d173384142f53e3f95dffe1b6ddeed3fe4b98ae3a46d43cc3109b30c3eaf1994653bd1bd6f99611f448ad9e8583b4d2331b",
    "signer": "0xd9bA17330fFb3Ea1356C5eC14971D9e1f2cb5200",
    "userId": "337125448"
  }
}