{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "951644728",
    "entityType": "User",
    "nonce": "0x21e2cd30b7acdb241865487a8df3cb9f1dea753f744d3610b1b52c80473a223f",
    "signature": "0xe304c4f0acc73bf2adc06ed037503c92fe68f9ef2485e3b525f709c5b842e3eb3a310761f6a3486809a76fcc13284e63e3c8fcf19e7652922bc7c00f1c651eea1b",
    "signer": "0x27eB4b469aE053b72c26B3e9c68a655390Fe24fB",
    "userId": "42216"
  }
}